How it starts
It rarely begins as a problem. A documentary, an athlete's social media, a well-meant nutrition talk, or a comment from a coach leads to cutting out sugar, then bread, then dairy, then anything processed. Each step feels like taking sport seriously.
The trouble is arithmetic. Every removal takes energy out of a day that already has training in it, and adolescents need more, not less.
Signs it has gone too far
- A growing list of foods that are not allowed.
- Anxiety, guilt or irritability when the plan is disrupted, at a party, on holiday, at a friend's house.
- Refusing to eat food she has not prepared or checked herself.
- Rigid timing rules and distress when they cannot be met.
- Skipping family meals, or eating separately.
- Exercising to compensate for something she ate.
- Weight falling, or not rising during a growth phase.
- Periods becoming irregular or stopping.
The distinguishing question
Is she making choices, or following rules she cannot break without distress? Rules that cannot be broken are the signal, whatever the food is.
Why sport raises the risk
- Performance culture rewards discipline and control.
- Physique comparison is constant in fitted kit and changing rooms.
- Weight or leanness comments from adults carry enormous weight at 14.
- Nutrition advice aimed at adult elite athletes gets applied to children.
- Being praised for eating cleanly delays anyone asking whether she is eating enough.
How to respond
- Talk about function, not weight: energy, recovery, strength, staying available to play.
- Do not negotiate food item by item, keep family meals normal and shared.
- Add rather than remove: an extra snack before and after training.
- Avoid praising restriction, discipline or leanness, even casually.
- Book a GP appointment early, and say plainly what you have noticed.
- Tell the club if a coach's comment triggered it.
What professional help looks like
A GP will check growth, weight, periods, bloods and mood, and can refer on. That may be a sports dietitian for a straightforward fuelling problem, or a specialist eating disorder service where restriction is entrenched.
Either way, early is much easier than late, and asking for help is not an overreaction. If she is training hard on too little, that is worth an appointment on its own.