Chapter 11
Female, Youth and Masters Athlete Nutrition

Female Athlete Nutrition & Menstrual Cycle

Learning goal: Apply sports nutrition to female athletes with appropriate confidence, distinguishing what is established from what is speculative.

Chapter 8 introduced this for endurance athletes. This lesson treats it properly, because the topic deserves more than a section inside another chapter and because the evidence base requires unusual care in how confidently it is presented.

1Start With What Does Not Change

The fundamentals apply identically: energy adequate to training load, protein 1.6–2.2 g/kg, carbohydrate periodised to demand, hydration measured individually, iron status checked. A female athlete who is under-fuelled will not be helped by cycle-phase refinements, and beginning there would be a diagnostic error. The differences discussed below sit on top of the fundamentals, never in place of them — a point worth stating because cycle-based products are marketed as though the reverse were true.

2The Cycle in Brief

A typical cycle runs roughly 21 to 35 days. The follicular phase runs from menstruation to ovulation, with oestrogen rising; the luteal phase follows ovulation, with progesterone and oestrogen both elevated before falling if pregnancy does not occur. These hormones have plausible effects on substrate use, core temperature, fluid balance and appetite. Cycles vary enormously between individuals and within the same individual, and hormonal contraceptives change the picture entirely.

3What Is Reasonably Suggested

Slightly greater fat oxidation and slightly higher core temperature in the luteal phase, which could mean marginally higher fluid and cooling needs in Indian heat. Some athletes report higher appetite and carbohydrate preference premenstrually. Some report meaningfully worse perceived effort during menstruation, often related to symptoms rather than to physiology directly. The honest framing is that these are plausible and individually variable, with effect sizes that are generally modest against training and total intake.

4What Is Not Established

Prescriptive phase-based protocols — specific macronutrient splits or training prescriptions for each phase — run well ahead of the evidence. Research in this area has historically been limited by small samples, inconsistent cycle verification and heterogeneous methods. Products marketed as cycle-syncing nutrition are selling certainty that does not exist. Being straightforward about this with athletes is more useful than a confident protocol, and it models the evidence appraisal Volume 12 teaches.

5A Defensible Practical Approach

Have the athlete track her cycle alongside training quality, perceived effort, appetite, sleep and symptoms for two to three months. Patterns that emerge are individual and actionable: if hard sessions consistently feel worse in a particular phase, the schedule can accommodate that. Reasonable general adjustments are attention to iron given menstrual losses, and attention to fluid and cooling in the luteal phase during Indian summer. This is data-led rather than protocol-led, which is what a thin evidence base warrants.

6Iron and Menstrual Losses

Menstrual blood loss is a significant contributor to iron deficiency, and combined with sweat losses, a vegetarian-heavy Indian diet and endurance or team-sport training, female athletes are the highest-risk group in this volume. Heavy menstrual bleeding is itself a medical matter worth raising with a doctor and is commonly normalised. Ferritin, haemoglobin and B12 testing is justified in any female athlete with unexplained fatigue or performance decline, with interpretation and dosing by a doctor.

7Contraceptives, Pregnancy and Scope

Hormonal contraceptives alter the hormonal profile and therefore any cycle-based approach; the specifics vary by type and are a medical question. Nutrition in pregnancy and postpartum for athletes carries requirements and cautions well beyond general sports nutrition and belongs with an obstetrician and a dietitian. The practitioner's position is: support energy, protein, iron and fluid; track rather than prescribe cycle protocols; and refer anything involving contraception, pregnancy, menstrual dysfunction or suspected disordered eating.

• Fundamentals first — energy, protein, iron — before any cycle refinement.
• Phase effects are plausible and modest; prescriptive protocols outrun the evidence.
• Track individually for two to three months rather than applying a generic protocol.
• Female athletes are the highest-risk group for iron deficiency in this volume.

One closing practical note. Where an athlete is on hormonal contraception, cycle tracking as described above will not reflect a natural cycle, and phase-based adjustments have no clear basis. That is not a problem to solve — it simply means the tracking effort is better spent on training quality, sleep and iron status, which remain informative regardless.

Next: Lesson 11.2 covers athletes who are still growing.

Youth Athlete Nutrition (13–18 years)

Learning goal: Feed adolescent athletes for growth as well as training, and recognise where adult advice becomes inappropriate.

An adolescent athlete is doing two things at once: training and growing. Adult sports nutrition applied unmodified to a 15-year-old is not merely imprecise — it can be harmful.

1Growth Is the Priority

Adolescence involves rapid gains in height, lean mass and bone density, and the peak bone mass laid down during these years substantially determines skeletal health for life. Energy and nutrient requirements are therefore proportionally higher than for an adult of the same size, and any restriction risks compromising growth, bone accrual and maturation. The governing rule is straightforward: for adolescents, ensure enough, and be extremely cautious about anything that reduces intake.

2Energy and Macronutrients

Energy needs are high and variable with growth stage. Rather than calculating precisely, judge by outcomes: normal growth along the child's own trajectory, good energy in training, adequate concentration at school, and normal appetite. Protein at roughly 1.4–1.8 g/kg is sufficient — adolescents do not need adult bodybuilding intakes, and the emphasis should be on total food. Carbohydrate should track training load as elsewhere. Calcium, iron and vitamin D matter particularly during bone accrual.

3The Indian Adolescent Athlete's Real Day

School from early morning, tuition afterwards, training in the evening, homework at night. The practical consequences are missed breakfasts, long gaps without food, and dinner at 10 pm. The highest-yield interventions are unglamorous: a real breakfast (poha with egg, idli with sambhar, paratha with curd), a substantial snack carried to school or academy (banana, roasted chana, milk, chikki, sandwiches), and food available immediately after training rather than at 10 pm. Roughly ₹80–120 a day of added food covers most of the gap.

4Supplements: The Default Is No

Adolescents should meet their needs through food. Creatine lacks long-term safety data in this age group and should not be used without medical clearance. Protein powders are unnecessary when food is available and normalise a supplement-first approach at exactly the age when food habits form. Products marketed for weight gain, muscle building or fat loss to young athletes are inappropriate, and an adult recommending them to a minor is a conversation for parents and a doctor.

5Weight-Class and Aesthetic Sports

Adolescents in wrestling, boxing, gymnastics and similar sports face pressure to make weight during the years when restriction does most damage. Acute weight cutting in adolescents is not acceptable practice, and chronic under-fuelling during growth can affect final height, bone density and maturation. Where a young athlete needs to compete in a lower class, the answer is growing into it over time under medical supervision — not a cut. A coach instructing a minor to lose weight is a safeguarding matter.

6Talking to Young Athletes and Parents

Conversations about food with adolescents should be framed around performance, energy and growth — never around appearance, body fat or weight. Parents should be included, since they usually control the food supply, and they are frequently the people best placed to fix the breakfast and the post-training meal. Avoid any language that could seed food anxiety; lesson 11.6 covers why this matters so much at this age.

7What Requires a Doctor

Faltering growth, delayed puberty, absent or delayed periods in girls, repeated stress injuries, significant unexplained weight loss, or any sign of disordered eating all require medical assessment, and with a minor that involves parents. Nutrition practitioners working with young athletes should know in advance who they refer to and should not attempt to manage any of these. The threshold for referral in adolescents should be lower than for adults, not higher.

One structural point about Indian academies: many young athletes live in hostels where food is provided in fixed quantities at fixed times, and an adolescent in a growth spurt training twice a day may simply not be given enough. Where that is the case, the useful intervention is with the academy rather than the athlete — asking for larger portions, a second serving policy, milk and eggs at breakfast, and food available after evening training. Telling a hungry 15-year-old to eat more without changing what is on offer achieves nothing.

• Adolescents are training and growing — ensure enough, restrict nothing.
• Fix breakfast and post-training food before anything else.
• Supplements default to no; creatine needs medical clearance.
• Never advise weight loss to a minor; coach-directed cuts are a safeguarding matter.

Next: Lesson 11.3 moves to the other end of the lifespan.

Masters Athletes (50+ years)

Learning goal: Adjust nutrition for older athletes, whose requirements move in the opposite direction to their instincts.

Recreational sport in India increasingly includes people in their fifties, sixties and beyond — runners, lifters, cyclists, badminton and cricket players. Their nutritional needs differ from younger athletes in ways that run counter to the general advice they usually receive about ageing.

1Anabolic Resistance

The central change. Older muscle responds less strongly to the same dose of protein — the leucine threshold rises from roughly 2–3 g per meal to roughly 3–4 g. The practical consequence is counterintuitive: masters athletes need larger per-meal protein doses than younger athletes, not smaller. Target 0.5–0.6 g/kg per meal across four feeds rather than more frequent smaller ones, built around leucine-dense sources: eggs, dairy, paneer, fish, chicken, soya.

2The Drift That Works Against Them

With age, appetite often falls, meals become lighter and more carbohydrate-dominant, and protein intake drifts down at exactly the point requirements rise. Combined with reduced training intensity, this drives the sarcopenia — age-related muscle loss — that masters athletes are trying to resist. Naming this pattern to an older athlete is often the most useful thing in the consultation, because most have never been told their protein needs went up rather than down.

3Resistance Training Is Non-Negotiable

Protein alone does not preserve muscle in older adults; it preserves muscle that is being loaded. Continued resistance training with meaningful loads partially restores anabolic sensitivity and is the strongest available intervention against sarcopenia and bone loss. The common drift toward lighter weights and higher repetitions with age is precisely the wrong direction. This is a coaching point that a nutrition practitioner should nonetheless make, because the two interventions only work together.

4Recovery Takes Longer

Masters athletes generally recover more slowly, tolerate less high-frequency hard training, and are more susceptible to soft-tissue injury. The nutritional supports are the ones from Chapter 6 — adequate energy, protein at every meal, carbohydrate matched to load, protected sleep — but the training-side adjustment matters more: more recovery days, not more supplements. An older athlete adding products while training on a 25-year-old's schedule has the priorities inverted.

5Micronutrients Worth Attention

Vitamin D and calcium matter for bone, and vitamin D deficiency is common in India across all ages. Vitamin B12 absorption declines with age, so deficiency becomes more likely even in those eating dairy. Hydration deserves particular attention because thirst sensation blunts with age, making the Chapter 5 monitoring — morning weight, urine colour — more valuable rather than less. All of these follow the test-then-refer rule from Chapter 10.

6Creatine in Older Athletes

Creatine has evidence in older adults, combined with resistance training, for gains in strength and lean mass. Given that sarcopenia is the primary concern, this is one of the clearer supplement indications in the whole volume. Standard dosing at 3–5 g daily applies, with the standing cautions: monohydrate only, tell the doctor before blood work, and medical clearance for anyone with kidney disease — which is more common in this age group.

7Medication and Comorbidity

Older athletes are more likely to be managing hypertension, diabetes, cardiac conditions, thyroid disorders or joint disease, and more likely to be on medication. Chapter 10 lesson 8 applies with force: ask what they take, including ayurvedic preparations, and refer supplement questions to a doctor or pharmacist. Sodium recommendations in particular may conflict with medical advice for someone with hypertension — the doctor's instruction takes precedence over any sports-nutrition guidance.

A note on the Indian masters athlete specifically. Many are returning to sport in their fifties after decades away, often prompted by a health scare or a diagnosis, and arrive with dietary advice from a cardiologist or diabetologist that was written for a sedentary patient rather than for someone about to train four times a week. That advice is not wrong, but it may not have anticipated the training. The useful action is to document the new training load and send the athlete back to their doctor with it, so the dietary guidance can be reviewed against what they are now actually doing.

• Anabolic resistance raises the per-meal protein dose needed — 0.5–0.6 g/kg.
• Four larger feeds beat six smaller ones after 50.
• Maintained loading, not lighter training, is what preserves muscle and bone.
• Creatine has good evidence in older adults alongside resistance training.

Next: Lesson 11.4 covers a transition that receives almost no attention in Indian sport.

Menopausal Female Athletes

Learning goal: Support female athletes through the menopausal transition, distinguishing nutrition support from medical management.

Women training through their forties and fifties experience a hormonal transition with real consequences for body composition, bone and recovery. It is barely discussed in Indian sporting contexts, which leaves a large group of active women without useful information.

1What Changes

Perimenopause and menopause involve declining oestrogen, with several relevant consequences: accelerated bone density loss, a tendency toward increased abdominal fat and reduced lean mass, changes in thermoregulation, and frequently disrupted sleep. Cycles become irregular before ceasing. The transition typically occurs over several years, and its timing and severity vary widely between individuals.

2Bone Is the Central Concern

Oestrogen decline accelerates bone loss, and the years around menopause are when the greatest losses occur. The interventions that matter are resistance and impact training, adequate calcium and vitamin D, and — critically — adequate energy availability. An athlete restricting energy during this transition is compounding an already elevated bone-loss risk. Indian dietary calcium from dairy is reasonably achievable for lacto-vegetarians, with ragi an excellent non-dairy source, but energy adequacy matters more than the calcium number.

3Protein and Body Composition

Lean mass declines with the transition, and the anabolic resistance discussed in lesson 11.3 applies. Protein should sit at 1.8–2.2 g/kg with per-meal doses of 0.5–0.6 g/kg, paired with maintained resistance training. Many women in this period are advised to eat less as body composition changes — often the exact opposite of what would help, since restriction accelerates lean mass and bone loss while doing little for the abdominal fat distribution that hormonal change is driving.

4Sleep, Thermoregulation and Training

Disrupted sleep and hot flushes affect recovery and training quality directly, and in Indian summer conditions thermoregulatory changes can make heat tolerance noticeably worse. Nutritional support is modest — the sleep-supporting measures from Chapter 6, attention to hydration and cooling from Chapter 5 — and the honest position is that these help at the margins. Persistent severe symptoms are a medical matter with medical treatment options, and referral is appropriate rather than an admission of failure.

5What Is Outside Nutrition Entirely

Hormone therapy, management of severe symptoms, bone density scanning and osteoporosis treatment are all medical decisions. A nutrition practitioner does not advise on hormone therapy, does not interpret bone density results, and does not recommend supplements as alternatives to medical treatment. What they do is ensure energy, protein, calcium and vitamin D adequacy, support training that loads bone, and refer.

6The Indian Context

Menopause is discussed relatively little in Indian sporting and fitness settings, and women in this age group are frequently either ignored by sports nutrition or targeted with products making unsupported claims. Practitioners working with recreational masters athletes in India will encounter this often, and simply being willing to discuss it factually and refer appropriately is more than most of these women have been offered.

7Practical Priorities

In order: maintain adequate energy — do not restrict during the transition; protein 1.8–2.2 g/kg in four larger feeds; resistance and impact training maintained or increased; calcium and vitamin D adequacy, tested where indicated; sleep protected as far as possible; and medical referral for symptoms, bone health assessment and any hormone-related question. That ordering holds regardless of what the athlete's primary complaint is.

8Managing Expectations Honestly

Women in this transition are marketed a great deal of certainty — supplements, protocols and diets promising to reverse the changes. Almost none of it has evidence, and some of it involves hormonally active compounds that should not be taken without medical advice. The honest position is that nutrition and training can substantially protect bone and lean mass, can support sleep and energy at the margins, and cannot prevent a hormonal transition. Saying that plainly is more respectful than selling a solution, and it leaves the athlete better equipped to evaluate the next product she is offered.

• Bone loss accelerates around menopause — energy restriction compounds it.
• Protein 1.8–2.2 g/kg in larger per-meal doses, with maintained resistance training.
• Hormone therapy and bone density management are medical decisions.
• Being willing to discuss this factually is more than most Indian athletes are offered.

Next: Lesson 11.5 covers the syndrome flagged repeatedly throughout this volume.

Female Athlete Triad & RED-S

Learning goal: Recognise relative energy deficiency in sport, understand its consequences, and refer appropriately.

This syndrome has been flagged in five previous chapters. This lesson treats it properly, because it is the most serious nutrition-related condition in sport and because it is routinely missed, minimised or mistaken for dedication.

1From the Triad to RED-S

The Female Athlete Triad described the interrelationship of low energy availability, menstrual dysfunction and reduced bone density. The concept has since been broadened to Relative Energy Deficiency in Sport (RED-S), which recognises that the underlying problem — insufficient energy availability for the body's needs after training expenditure — affects many systems, and affects male athletes too. The core idea is unchanged: the body, short of energy, downregulates functions it can afford to lose.

2What Gets Downregulated

Reproductive function, which is why menstrual disruption is an early and visible sign. Bone formation, producing reduced density and stress injuries. Immune function, producing repeated illness. Metabolic rate, gastrointestinal function, cardiovascular health, and psychological wellbeing. Performance itself eventually declines, though often after a period where the athlete appears to be improving — which is part of why the condition is so easily missed and so easily rationalised.

3How It Arises

Not always through deliberate restriction. Some athletes intentionally restrict for a weight class or an aesthetic standard. Many simply increase training load without increasing intake, which produces the same energy deficit without any conscious decision to diet. This second route is common in Indian endurance and team sport, where training volume rises and nobody adjusts the food. It matters because the two need different conversations: one is an education problem, the other may be a psychological one.

4The Signs to Recognise

Absent or irregular periods; repeated stress fractures or bone stress injuries; frequent illness; unexplained fatigue and performance decline; low mood or irritability; feeling cold; disrupted sleep; gastrointestinal problems; and in adolescents, delayed puberty or faltering growth. Any one warrants attention; two or more together warrant prompt referral. Note that many of these overlap with overtraining, which is exactly why the energy question must be asked explicitly rather than assumed.

5Why This Is Not Yours to Treat

RED-S involves endocrine, skeletal and often psychological dimensions, and recovery may take months to years with medical, dietetic and sometimes psychological input. A nutrition practitioner's contribution is recognition, honest communication, and referral — alongside supporting adequate energy intake as part of a medically-led plan. Attempting to manage it alone delays proper care, and in a growing athlete the bone density consequences may not be fully recoverable.

6Talking About It Well

Be direct and non-judgemental. State the observation and the concern: "your periods stopped when training increased, and you've had two stress fractures — those are connected, and it's something a doctor needs to look at." Avoid framing it as a failure of discipline or as a body-image accusation. Many athletes have been told amenorrhoea is a normal sign of hard training, so correcting that belief plainly is often the most useful thing said in the conversation.

7The Culture Problem in Indian Sport

Under-fuelling is frequently praised as dedication, weight loss is treated as automatic progress, and menstrual health is rarely discussed at all. Coaches may set weight targets without any medical input. A practitioner will often be the only person in the athlete's environment raising this, which makes the responsibility to raise it clearly greater rather than smaller. Where a coach is directing the restriction, particularly with a minor, that is a safeguarding matter and not merely a difference of professional opinion.

A note on male athletes, since the syndrome’s original name obscures them. RED-S affects men too, and in male athletes the early hormonal signal — reduced testosterone — is invisible without testing, so the condition often presents later and through different signs: repeated illness, stress injuries, low mood, declining performance and loss of libido. Male endurance athletes, cyclists, jockeys and weight-class competitors are the higher-risk groups. The absence of an obvious marker like amenorrhoea means the threshold for asking about energy intake should be lower, not higher.

• RED-S is insufficient energy availability affecting bone, hormones, immunity and mood.
• It often arises from raising training without raising intake — no deliberate diet required.
• Good performance early does not rule it out; decline usually comes later.
• Recognition and referral are your role — treatment is medical.

Next: Lesson 11.6 covers the related risk in young athletes.

Youth Body Image & Disordered Eating

Learning goal: Recognise disordered eating in young athletes, avoid contributing to it, and refer appropriately.

Sport can protect young people's wellbeing and it can damage it. The difference often lies in how adults around them talk about bodies and food, which places real responsibility on anyone giving nutrition advice to adolescents.

1Why Athletes Are at Elevated Risk

Several factors combine: sports that emphasise leanness or weight classes, environments where bodies are visible and discussed, the belief that lighter is always faster, coaches setting weight targets, and the personality traits that make good athletes — discipline, perfectionism, high pain tolerance — also making restriction easier to sustain. Adolescence adds a period of rapid body change and heightened social sensitivity. The result is a genuinely elevated risk that adults should assume is present rather than exceptional.

2The Spectrum

Disordered eating spans a range from occasional restriction and food anxiety through to diagnosable eating disorders. The earlier end is far more common and is where intervention is most effective, which is why waiting for an obvious clinical picture is the wrong approach. Warning signs include preoccupation with food or body, rigid food rules, eating alone or avoiding team meals, guilt after eating, excessive exercise beyond the programme, weight fluctuation, and social withdrawal.

3What Practitioners Must Not Do

Do not comment on a young athlete's body, weight or appearance. Do not set weight or body-fat targets for minors. Do not describe foods as good or bad, clean or dirty — that framing is a documented contributor to food anxiety. Do not recommend restriction to an adolescent. Do not conduct body composition measurements on young athletes without clear justification, parental consent and appropriate handling of the result. Each of these is a common practice and each carries real risk.

4What to Do Instead

Frame everything around performance, energy, growth and health. Talk about adding foods rather than removing them. Normalise eating enough and eating socially with the team. Model neutral language about food. Where a young athlete raises a body concern, listen without endorsing the premise and involve their parents and a doctor rather than offering a nutritional solution to what may be a psychological question.

5When You Suspect Something

Do not attempt to diagnose or treat. Do not confront, and do not make food or weight the centre of the conversation, both of which commonly increase concealment. Express concern about the person rather than the eating — that they seem tired, or withdrawn, or that you have noticed they are not eating with the team. Involve parents where the athlete is a minor, and refer to a doctor who can assess properly. Coaching an athlete through an eating disorder is beyond any nutrition practitioner's scope, and attempting it can cause harm.

6The Indian Context

Eating disorders are frequently unrecognised in India and are sometimes assumed to be a Western phenomenon, which delays diagnosis. Specialist services are unevenly available, and there is often stigma attached to both the condition and to seeking psychological help. Practically, this means starting with a doctor the family trusts, being matter-of-fact rather than dramatic, and being prepared for the referral pathway to take longer than it should.

7Male Athletes Are Not Exempt

Disordered eating in male athletes is under-recognised, and presents differently — frequently as compulsive training, preoccupation with muscularity, rigid dietary rules, and supplement overuse rather than as visible restriction. Weight-class male athletes are at particular risk. The same rules apply: neutral language, no weight targets for minors, concern expressed about the person, and referral rather than management.

A note on team environments. Much of what protects young athletes is cultural rather than individual: whether the squad eats together, whether coaches comment on bodies, whether weigh-ins happen publicly, whether food is framed as fuel or as something to be earned. A practitioner who changes the environment — team meals, no public weigh-ins, neutral language from the coaching staff — protects every athlete in the squad, including the ones who would never have raised a concern individually. That is usually more valuable than any number of individual consultations.

• Athletes are at elevated risk; assume it is present rather than exceptional.
• Never comment on a young athlete's body or set weight targets for minors.
• Neutral food language is the cheapest and most protective habit available.
• Express concern about the person, involve parents, refer — never manage it yourself.

Next: Lesson 11.7 covers a group with almost no sport-specific nutrition literature.

Transgender & Non-Binary Athlete Nutrition

Learning goal: Provide competent, respectful nutrition support to transgender and non-binary athletes within an honest account of the evidence and of professional scope.

This lesson covers nutrition support for individual athletes. Questions of competition eligibility and category are set by sports governing bodies, are contested, and are outside both this course's scope and a nutrition practitioner's role.

1Start From the Fundamentals

The physiological principles in this volume apply: energy adequate to training load, protein for repair and adaptation, carbohydrate matched to demand, hydration measured individually, micronutrient status assessed where indicated. A transgender athlete's nutrition needs are, in the great majority of respects, an athlete's nutrition needs. Starting from the fundamentals rather than from difference is both accurate and the right posture.

2What Gender-Affirming Hormone Therapy Changes

Hormone therapy alters body composition over time — broadly, testosterone therapy tends to increase lean mass and reduce fat mass, while oestrogen therapy with testosterone suppression tends toward the reverse. These shifts change energy requirements and mean that targets calculated from bodyweight need periodic recalculation as composition changes. Bone health also warrants attention, since sex hormones influence bone density and the transition period involves change. The therapy itself is entirely a medical matter.

3The Honest State of the Evidence

Sports nutrition research specific to transgender athletes is very limited. Most recommendations are extrapolated from general athlete data and from endocrinology, not derived from studies in this population. Saying so plainly is more useful than confident prescription, and it is the same standard applied to female athletes in lesson 11.1 and to youth athletes elsewhere. Where the evidence is thin, the appropriate response is individual monitoring rather than a protocol.

4A Practical Approach

Set targets from current bodyweight and training load, and recalculate periodically as composition changes rather than assuming stability. Monitor by outcomes — training quality, recovery, bodyweight trend, energy levels — as with any athlete. Pay attention to bone health, calcium and vitamin D. Check iron and B12 where diet or symptoms indicate. Coordinate with the athlete's medical team where the athlete wants that, since hormone therapy and nutrition interact and their doctor holds the clinical picture.

5Scope, Clearly Stated

Hormone therapy dosing, monitoring and any medical management belong to the athlete's doctor. Nutrition practitioners do not advise on hormone therapy, do not interpret hormone panels, and do not offer nutritional substitutes for medical care. Competition eligibility is a governing-body matter. What is in scope is exactly what is in scope for any athlete: energy, macronutrients, hydration, micronutrient status, and referral.

6Practising Respectfully

Use the athlete's name and pronouns. Ask what information is relevant rather than assuming, and only ask what you actually need for the nutrition work — medical history relevant to energy requirements and micronutrient status, not curiosity. Keep information confidential, as with any client. If an athlete does not wish to discuss something, that is their decision and the nutrition work can generally proceed regardless.

7Elevated Risks Worth Awareness

Transgender people face higher rates of disordered eating and mental health difficulties than the general population, often linked to minority stress rather than to anything intrinsic. This means the lesson 11.6 principles apply with particular care: neutral language about food and bodies, attention to signs of restriction, and a low threshold for referral to appropriate medical and psychological support. In India, access to informed and respectful services is uneven, which makes knowing a trusted referral route valuable in advance.

• The fundamentals apply — start there, not from difference.
• Hormone therapy changes body composition, so recalculate targets periodically.
• Sport-specific evidence is very limited; monitor individually rather than prescribe protocols.
• Hormone therapy is medical; eligibility is a governing-body matter; neither is yours.

Next: Lesson 11.8 covers athletes managing medical conditions.

Medical Conditions & Sport Nutrition

Learning goal: Work safely with athletes who have medical conditions, and know precisely where the boundary sits.

India carries a high burden of diabetes, hypertension, thyroid disorders, PCOS and asthma, and athletes are not exempt. This lesson is about working alongside medical care without straying into it.

1The Governing Principle

When an athlete has a diagnosed condition, their doctor's dietary instruction takes precedence over any sports nutrition recommendation. Your role is to help them meet training demands within the medical guidance, and to flag to the doctor where the two appear to conflict. You do not adjudicate the conflict yourself, and you do not adjust anything the doctor has prescribed.

2Diabetes

Exercise affects blood glucose substantially and in ways that vary by type of diabetes, medication and session type. Carbohydrate timing, insulin adjustment and hypoglycaemia management are medical matters requiring the athlete's diabetes team. What a nutrition practitioner can helpfully do is support consistent meal patterns, help the athlete understand carbohydrate content of Indian foods, and encourage glucose monitoring around training as their doctor directs. Never advise on insulin or medication doses.

3Hypertension and Cardiac Conditions

Sodium recommendations in this volume assume a healthy athlete. Someone on a medically prescribed sodium restriction follows their doctor's instruction, and this is the clearest example of a genuine conflict: a hypertensive athlete training in Indian heat has real sweat sodium losses and a real medical reason to limit sodium. That tension is resolved by the doctor with knowledge of the individual, not by a practitioner applying a sports guideline. Flag it, refer, and work within whatever is decided.

4Thyroid Disorders and PCOS

Both are common in India, both affect metabolism, body composition and energy, and both are medically managed. Thyroid medication has specific timing requirements relative to food and to iron and calcium supplements — a detail worth knowing so you can ask, though the instruction comes from the doctor or pharmacist. PCOS is frequently accompanied by dietary advice from various sources of varying quality; the practitioner's useful contribution is supporting adequate energy and protein for training rather than adding another restrictive regime.

5Asthma, Allergies and Coeliac Disease

Asthma is relevant partly because some treatments interact with anti-doping rules, which is a matter for the doctor and anti-doping authority per Chapter 10. Food allergies require genuine avoidance and, where severe, an emergency plan that is a medical matter. Coeliac disease requires strict gluten avoidance and proper diagnosis — an athlete who has self-diagnosed and already removed gluten should be encouraged to discuss it with a doctor, since testing is unreliable once gluten has been excluded.

6Kidney and Liver Disease

These are the conditions where sports nutrition advice is most likely to cause harm. Protein recommendations in this volume are inappropriate for someone with kidney disease, and creatine is contraindicated without medical clearance. Any athlete with either condition should have their protein, fluid, sodium, potassium and supplement decisions made by their medical team. This is a hard boundary, not a cautious one.

7How to Work Alongside Medical Care

Ask about diagnosed conditions and medications routinely and early, including ayurvedic preparations. Where a condition exists, ask what dietary instruction they have been given and work within it. Where you see a conflict with training demands, write it down clearly and ask the athlete to raise it with their doctor — a specific written question gets a better answer than a vague one. And be comfortable saying that something is outside your scope; Volume 12 formalises this, and it is a mark of competence rather than a limitation.

One further practical point for Indian settings: many athletes consult multiple practitioners simultaneously — a doctor, an ayurvedic practitioner, a gym trainer, a family elder — and receive conflicting dietary instructions from all of them. Rather than competing, ask what else they have been told and by whom, and be explicit about which parts of the picture you are and are not responsible for. An athlete who understands that the doctor owns the medical instruction and you own the training nutrition within it is far less likely to quietly follow the loudest voice.

• The doctor's dietary instruction always takes precedence.
• Kidney and liver disease are hard boundaries — standard protein and creatine advice does not apply.
• Ask about diagnoses and all medications, including ayurvedic, at intake.
• Flag conflicts in writing and send them back to the doctor.

Next: Lesson 11.9 covers adaptive athletes.

Disability & Adaptive Athlete Nutrition

Learning goal: Adapt nutrition assessment and prescription for athletes with disabilities, where standard formulas frequently do not apply.

Para sport in India is growing, and adaptive athletes are among the least well served by standard sports nutrition, much of which assumes a body the athlete may not have.

1Why Standard Formulas Break

Energy prediction equations are built on typical body composition and typical movement economy. An athlete with a limb difference has less metabolically active tissue than their height and weight suggest. A wheelchair athlete uses a smaller muscle mass for propulsion, changing both energy cost and the pattern of fatigue. An athlete with cerebral palsy may have substantially higher movement cost due to muscle tone and involuntary activity. Applying a standard equation and treating the output as accurate will mislead in either direction, sometimes badly.

2Assess by Outcome Instead

Where formulas are unreliable, measured outcomes become the primary tool. Track bodyweight trend over weeks, training quality and recovery, energy through the day, and where possible objective performance markers. Set an initial estimate, then adjust from what actually happens. This is sound practice for any athlete and becomes essential here. It also means being explicit with the athlete that the first number is a starting point, not a prescription.

3Spinal Cord Injury

Several specific considerations. Energy requirements are typically lower than a formula predicts because of reduced active muscle mass. Thermoregulation may be impaired below the level of injury, affecting sweating and heat tolerance — a serious matter in Indian conditions and one that makes Chapter 5's monitoring more important and its sweat-rate assumptions less reliable. Bowel and bladder management routines affect fluid strategy in ways that must be planned with the athlete. Pressure injury risk makes adequate protein and energy directly relevant to skin integrity.

4Limb Difference and Amputation

Body composition assessment and bodyweight-based targets both need adjustment, since the athlete's mass does not reflect the reference body the equations assume. Prosthesis use can raise the energy cost of movement substantially. Practical approach: set targets from lean mass estimates where available or from tracked outcomes, and revisit them when equipment or training changes. Avoid presenting a formula-derived number as though it were precise.

5Visual Impairment and Neurological Conditions

For visually impaired athletes the nutritional physiology is typically unchanged, but practical access matters: label reading, food identification, independent preparation, and navigating an unfamiliar buffet at a tournament. Simple accommodations — describing what is available, agreeing consistent placement, providing information in an accessible format — are the substance of good practice here. For athletes with neurological conditions, movement cost, swallowing, medication interactions and fatigue patterns may all be relevant and are often best understood by the athlete themselves.

6Ask the Athlete

Adaptive athletes generally understand their own bodies, routines and constraints better than any practitioner will from a textbook. Ask directly what affects their energy, their eating, their hydration and their training, and treat the answers as primary data. This is both respectful and simply more accurate than inference. It also avoids the common failure of designing a plan around an assumption about the disability rather than around the person's actual life.

7The Indian Para-Sport Context

Support structures for para athletes in India are uneven, facilities are frequently inaccessible, and specialist expertise is thin. Practically, a nutrition practitioner may be one of very few informed people around the athlete, and the useful contributions are often basic: ensuring enough food is available and accessible, planning hydration around real routines, arranging that tournament catering can actually be reached and understood, and referring to appropriate medical support. Competence here starts with attention, not with specialist knowledge.

A practical note on tournaments and travel for adaptive athletes: accessible catering, accessible toilets and the distance between accommodation, venue and food are not peripheral logistics — they determine whether the nutrition plan is executable at all. A plan requiring a wheelchair athlete to reach a buffet up three steps has failed before it started. Ask about access as part of the nutrition assessment, and where possible check the venue in advance rather than discovering the problem on competition morning.

• Standard energy equations are unreliable for adaptive athletes in both directions.
• Assess by tracked outcomes rather than defending a formula output.
• Thermoregulation, bowel and bladder routines and pressure care all shape the plan.
• Ask the athlete — they hold the most accurate information about their own body.

Next: Lesson 11.10 pulls the special populations together.

Special Population Integration

Learning goal: Work with athletes who belong to several of these groups at once, and build a general method rather than a set of special cases.

Real athletes do not arrive as single categories. A 52-year-old woman with hypertension who runs is three of this chapter's lessons at once, and applying them separately produces contradictions.

1Overlap Is the Norm

A 16-year-old girl in a weight-class sport is an adolescent, a female athlete and a RED-S risk simultaneously. A 55-year-old man with type 2 diabetes who lifts is a masters athlete and a medical-condition case. A transgender athlete with an eating disorder history needs lessons 11.6 and 11.7 together. Treating these as separate protocols to be run in sequence produces plans that conflict; treating them as one person with several relevant characteristics does not.

2A Hierarchy for Resolving Conflicts

When recommendations conflict, resolve in this order. First, medical instruction — the doctor's guidance always wins. Second, safety — anything with a serious downside, such as growth in adolescents, bone health, or RED-S risk, outranks performance optimisation. Third, the athlete's own priorities and constraints, including budget, culture and preference. Fourth, performance refinement. Applied consistently, this hierarchy resolves nearly every conflict this chapter can generate.

3Worked Example of the Hierarchy

A 16-year-old female judoka wants to drop a weight class; her coach supports it; her periods have become irregular. Medical instruction: none yet, so the first action is to obtain it. Safety: adolescent growth, bone accrual and possible RED-S all point strongly against restriction, and this outranks everything below. Athlete priorities: she wants the lower class, which matters and can be discussed for a future season. Performance: irrelevant until the above are settled. The plan writes itself — refer, involve parents, do not cut.

4What Generalises Across All These Groups

Four things recur. Energy adequacy matters more than any refinement, and is the most common failure in every group. Protein distribution matters more than total in older athletes and in anyone using lower-leucine sources. Testing beats guessing for iron, vitamin D and B12 across all of them. And the referral threshold should be lower, not higher, when working with adolescents, athletes with medical conditions, and anyone showing signs of RED-S or disordered eating.

5What Is Genuinely Individual

The specifics: how a particular woman's cycle affects her training, how a particular adaptive athlete's day works, what a particular adolescent will actually eat, what a masters athlete's medications require. This is why the chapter has repeatedly favoured tracking over protocols. Where evidence is thin — and it is thin for most groups in this chapter — individual monitoring is not a fallback, it is the correct method.

6Documentation and Continuity

With complex cases, write things down: what conditions and medications exist, what the doctor has instructed, what you recommended and why, what was agreed, and what is being monitored. This protects the athlete when they see other practitioners, protects you if a question arises later, and makes your own reasoning visible when you revisit it in three months. Volume 12 covers records properly; this chapter is where the need first becomes obvious.

7Knowing the Limits of Competence

No practitioner is expert in all of this. Competence includes knowing which cases you should not take alone, and having a referral network before you need it — a doctor, ideally a dietitian, and where possible someone who works with eating disorders. Saying "this needs someone with different expertise, and here is who I would suggest" is a professional act, not a failure. It is also, in several of the cases in this chapter, the single most valuable thing you can do.

• Athletes belong to several of these groups at once — treat the person, not the category.
• Resolve conflicts by hierarchy: medical, safety, athlete priorities, performance.
• Energy adequacy is the most common failure across every group in this chapter.
• Competence includes knowing which cases need someone else.

Next: Lesson 11.11 draws the chapter together.

Chapter Revision

Learning goal: Reconstruct the chapter as one argument and hold its cautions without notes.

This chapter argued that the numbers in the rest of this volume were derived largely from young men, and that applying them unmodified to everyone else ranges from imprecise to harmful.

1The Chain of Reasoning

Female athletes need the fundamentals first, with cycle effects tracked individually rather than prescribed (11.1). Adolescents are growing as well as training, so the rule is ensure enough and restrict nothing (11.2). Masters athletes need larger per-meal protein doses and maintained loading, both against instinct (11.3). Menopause accelerates bone loss, making restriction during that transition particularly costly (11.4). Underneath several of these sits RED-S, which is a medical condition and the most serious thing in this volume (11.5). Youth body image requires adults to change how they speak as much as what they prescribe (11.6). Transgender athletes need the fundamentals plus honesty about thin evidence and clear scope (11.7). Medical conditions mean the doctor's instruction always wins (11.8). Adaptive athletes break standard formulas, so assess by outcome and ask the athlete (11.9). And real people belong to several groups at once, resolved by a hierarchy (11.10).

2The Numbers Worth Memorising

Adolescents: protein 1.4–1.8 g/kg, no restriction, supplements default to no. Masters: protein 0.5–0.6 g/kg per meal across four feeds, leucine threshold roughly 3–4 g. Menopausal athletes: protein 1.8–2.2 g/kg with maintained resistance and impact training. Female athletes generally: iron, ferritin and B12 testing where fatigue or decline is unexplained. Across all: energy adequacy first, and a lower referral threshold than for a healthy adult male athlete.

3The Referral Triggers

Absent or irregular periods. Repeated stress injuries. Faltering growth or delayed puberty. Signs of disordered eating in any athlete of any age or sex. Any diagnosed medical condition where dietary instruction exists. Suspected RED-S. Pregnancy or postpartum questions. Menopausal symptom management and bone density. Hormone therapy questions. Each of these is a doctor's territory, and several are also a psychologist's.

4The Errors to Watch For

Six recur. Applying young-male numbers unmodified. Advising restriction to an adolescent. Reducing an older athlete's protein because they are older. Treating amenorrhoea as a training adaptation. Commenting on a young athlete's body. And overriding a doctor's dietary instruction with a sports-nutrition guideline.

5What This Chapter Does Not Settle

Honest limits, and they are larger here than anywhere else in this volume. Female-specific research remains limited and methodologically inconsistent. Adolescent sports nutrition research is thin for ethical and practical reasons. Masters athlete data is growing but sparse. Transgender athlete nutrition has almost no sport-specific literature. Adaptive athlete research is limited and highly heterogeneous. In every one of these groups, individual monitoring is not a second-best option — it is the appropriate method given what is known.

6Why This Chapter Sits Where It Does

It comes after nine chapters of confident numbers deliberately. Having built the framework, this chapter shows where it does not fit, which is a more useful lesson than presenting caveats alongside every recommendation. It also prepares Volume 12, which formalises evidence appraisal, scope of practice and professional boundaries — all of which appear here in applied form.

7The One-Sentence Version

For every group in this chapter, energy adequacy comes first, the referral threshold is lower than you think, and where the evidence is thin the honest answer is to track the individual rather than to prescribe a protocol you cannot support.

• Energy adequacy is the first and most commonly failed requirement in every group.
• Adolescents restrict nothing; masters athletes need more protein per meal, not less.
• Amenorrhoea is never a training adaptation.
• Thin evidence means track the individual, not prescribe a protocol.

Next: Lesson 11.12 applies the chapter to five athletes.

Assessment & Case Studies

Learning goal: Produce defensible plans — and defensible referrals — for five athletes across the lifespan.

Work each before reading the analysis. In this chapter more than any other, the correct first action is frequently a referral rather than a plan.

1Case One — Ananya, 17, Middle-Distance Runner, Pune

Situation: 48 kg, running 60 km weekly, has not menstruated in 11 months, two stress fractures in 18 months, eating roughly 1,600 kcal. Her coach says her light frame is why she is fast. Analysis: This is RED-S in an adolescent (11.2, 11.5) — three concurrent signs, during the years when bone accrual is being determined and some losses may not be recoverable. The coach's framing is actively harmful. Prescription: refer to a doctor immediately with parents involved; state plainly that amenorrhoea is not a normal training adaptation. Support increased energy intake as part of a medically-led plan, not instead of one. Raise the coach's framing with the parents. Do not set any weight or composition target. Why it works: it treats the most serious thing first and does not let a nutrition conversation substitute for medical care.

2Case Two — Rekha, 53, Recreational Badminton, Bengaluru

Situation: 68 kg, perimenopausal, plays three times weekly, no resistance training, eating 1.3 g/kg protein, planning a 1,200 kcal diet for midsection weight gain. On no medication. Analysis: Almost every element points the wrong way (11.3, 11.4). Anabolic resistance means her protein is low and her per-meal doses are likely lower still; a steep deficit during the menopausal transition accelerates bone and lean-mass loss; and the absence of resistance training removes the strongest available protection. Prescription: protein to 1.8–2.2 g/kg in four feeds of roughly 35–40 g; add resistance and impact training; adequate rather than restricted energy; test vitamin D; refer for bone health assessment and symptom discussion. Why it works: it reverses three instincts that were all costing her the thing she was trying to protect.

3Case Three — Karan, 15, Academy Cricketer, Mumbai

Situation: 55 kg, told by his coach he is "too small" and needs to gain 8 kg before the season. Coach has recommended a mass gainer and creatine. Parents are asking your advice. Analysis: An adolescent, so supplements default to no and creatine lacks long-term data at his age (11.2, 10.10). An adult setting a body-change target for a minor also raises the lesson 11.6 concerns about how this is being framed to him. Prescription: no supplements. Build energy through food — more rice, roti, milk, eggs, peanuts, banana, dates — targeting gradual gain alongside normal growth, with protein 1.4–1.8 g/kg. Speak with the parents about the framing, and note that at 15 he may simply not have grown yet. If they wish to consider creatine later, that is a paediatrician's decision. Why it works: it supports growth without normalising supplements or body-change targets at 15.

4Case Four — Devendra, 41, Wheelchair Racer, Jaipur

Situation: Spinal cord injury at T6, training six times weekly, energy target calculated at 2,900 kcal from a standard equation, gaining weight steadily. Impaired sweating below injury level. Trains outdoors in summer. Analysis: The equation over-estimated because active muscle mass is reduced (11.9). Separately, impaired thermoregulation below the injury level is a genuine safety issue in Rajasthan summer, and standard sweat-rate assumptions do not apply. Prescription: reduce energy from the observed weight trend rather than defending the formula, holding protein at target to protect lean mass and skin integrity. For heat: external cooling, scheduling around the hottest hours, and hydration planned around his bladder management routine in consultation with his medical team. Track weekly. Why it works: it assesses by outcome and treats the thermoregulation issue as the safety matter it is.

5Case Five — Sunita, 34, Marathon Runner With Type 1 Diabetes, Delhi

Situation: Wants to increase in-race carbohydrate from 40 to 70 g/hour for a marathon. Manages insulin with her diabetes team. Asks you to set the carbohydrate and adjust her insulin accordingly. Analysis: The carbohydrate question is within scope; the insulin question is emphatically not (11.8). Exercise and carbohydrate intake both affect her glucose substantially, and the two decisions are inseparable — which means the plan must be made with her diabetes team, not by you and reported to them. Prescription: propose the fuelling structure — source types, hourly targets, timing, gut training over eight weeks — in writing, and send it to her diabetes team for the insulin side. Support gut training and product selection. Never advise on insulin. Why it works: it contributes real expertise on the fuelling while keeping the medical decision where it belongs.

6A Sixth Case to Work Alone

One without a printed answer. A 19-year-old female footballer at a Bengaluru academy is vegetarian, lives in a hostel with fixed meals, trains twice daily, has irregular periods that she says have “always been like that”, is frequently ill, and has been advised by a senior player to start a fat burner and a protein powder. Work the chain: what is the ranked list of concerns, which of them are medical rather than nutritional, what would you refuse outright, who else needs to be involved, and what would you change first given that she does not control her own food supply? Your ordering and your referrals matter more than the macros.

• In this chapter, referral is frequently the correct first action, not a fallback.
• Standard formulas and standard numbers often need reversing, not adjusting.
• Never write a weight-loss plan for a minor, whoever asks.
• Contribute your expertise in writing and let the medical team hold the medical decision.

A final observation on this chapter. Across the five cases, not one athlete was failed by a lack of nutritional knowledge — the knowledge existed in earlier chapters. They were failed by that knowledge being applied to bodies it was not derived from, by adults who set body targets without authority to do so, and by systems that never asked the obvious question. Competence here is less about knowing more numbers and more about knowing which numbers do not apply, and having the confidence to say so.

Next: Chapter 12 brings the whole volume together into applied practice.