The Vegetarian Distance Runner Who Is Always Tired

Requirement

• Endurance athletes need about 1.2–1.6 g/kg/day.
• 55 kg × 1.2–1.6 = 66–88 g/day, so roughly 75 g/day is a sensible target.

What the plan delivers

• The friend's 2 g/kg target = 110 g/day, about 25–40 g more than needed. Extra protein above requirement is not converted into extra muscle; it is oxidised for energy or stored as fat, and it is expensive.
• The shake alone supplies 40 g, over half his daily requirement in one dose. Muscle protein synthesis responds maximally to roughly 20–25 g of good-quality protein per dose, so the second scoop adds little.
• A high protein intake also raises urinary solute load and can increase calcium loss, and it displaces carbohydrate and micronutrient-rich food from a diet that is already too small.

Judgement

• Keep one scoop (about 20 g) after training if convenient, but build the rest from food: dal, rajma, chana, paneer, curd, milk, soya, peanuts. Combining cereal (limiting in lysine) with pulses (limiting in methionine) at the same meal gives a complete amino acid profile - dal with rice or roti already does this.
• The goal of adding 3 kg of muscle in 10 weeks while in an energy deficit is unrealistic; he cannot gain mass on 1,800 kcal.

The core problem is energy and carbohydrate, not protein

• At 55 kg with 90 minutes of daily training, his requirement is roughly 2,800–3,200 kcal, and carbohydrate at 6–8 g/kg = 330–440 g/day. He is eating about 1,800 kcal and probably 200–250 g carbohydrate.
• He fasts from 7 a.m. to 4 p.m., trains at 5 p.m., and eats at 9 p.m. That is a nine-hour fast before training and a four-hour delay after it: low liver glycogen before the session, no carbohydrate to top up muscle glycogen, and a delayed recovery window. Fading in the last 800 m is the classic picture of glycogen depletion, and the 2 kg loss reflects chronic energy deficit.

Corrected day

• 7 a.m.: parathas plus curd and a fruit; mid-morning: banana and peanuts.
• Lunch at school (never skipped): roti, dal or rajma, vegetables, curd.
• 3:30–4 p.m.: light snack 1–2 hours before training (banana, poha, or bread).
• During training: water; if hot, a dilute carbohydrate drink.
• Within 30–60 minutes after training: milk with a banana or a curd-rice preparation, then a normal dinner by 8 p.m.

For a 10 a.m. race

• 6:30–7 a.m.: high-carbohydrate, low-fat, low-fibre meal (about 150–200 g carbohydrate: poha, banana, bread with jam, some curd).
• Sips of water up to the start; nothing unfamiliar on race day; practise this routine in training.

Iron

• Plant iron is non-haem and poorly absorbed. He needs 1.8 times more than a non-vegetarian to absorb the same amount.
• Pair iron sources (dal, spinach, jaggery, dates, peanuts) with vitamin C (lemon, amla, guava, orange) at the same meal, and keep tea and coffee away from meals because tannins block absorption.
• Fatigue plus a distance runner plus a vegetarian diet is a strong reason to measure haemoglobin and ferritin, not to guess.

Vitamin B12 and vitamin D

• Milk and curd supply some B12, so he is not automatically deficient, but a low intake over years still warrants a check; B12 deficiency causes fatigue and tingling.
• Vitamin D is low in many Indian adolescents and is linked with bone pain and frequent infections; check and supplement if deficient.

Immunity and energy availability

• Frequent colds in a 17-year-old athlete usually reflect chronic low energy availability and inadequate sleep rather than a missing supplement. Fix the 1,800 kcal intake first, protect 8–9 hours of sleep, and reduce training load during illness.
• Zinc and vitamin C from food (nuts, seeds, citrus) support normal immune function; megadoses are not justified.
• Finally, address the 3 kg muscle goal: it is driving the over-supplementation and the undereating simultaneously, so reset it to a performance goal (holding pace over the last 800 m) and refer to a doctor for the blood tests before changing anything else.