For a teenager athlete, chronic under-eating stalls growth, delays puberty, and increases injury risk. "Cutting" advice for adults does not translate.
Three balanced meals + 1–2 snacks. Carbs matter — they power training and growth.
Protein at ~1.4–1.8 g/kg from real food is plenty.
Missed periods, chronic fatigue, plateaued height. These are red flags — see a sports-medicine doctor, not a diet plan.
See age-adjusted healthy weight ranges.
Ideal Weight by Age →
BMI can label muscular athletes as overweight or obese. Here's when BMI misses the mark and what to use instead.
The clearest waist guideline for women, based on the NHS and Ashwell Waist-to-Height ratio — no charts, just one rule.
How age changes your healthy weight range, and the simple WHO/CDC formula that answers "how much should I weigh?".