Our expert says:
Because your son is still growing, it is too early to predict how much he will ultimately weigh. At present he has a perfectly normal BMI of 20,7 (normal range 18-25). He is probably burning up any additional energy he ingests by exercising so strenuously. At present it is important for him to eat a well balanced diet in quantities that satisfy his appetite and energy needs. He should not use high-protein supplements or any steroids as this can damage his growth and health. He can certainly increase his carbohydrate intake concentrating on carbs with a low Glycaemic Index (GI), because carbs are the best fuel for intensive exercise and they have a 'protein-sparing' effect. (Click on 'Diet' and 'Weight loss' and 'The right Approach' and read the articles on the GI). You will find that he may need to eat more snacks and even include products such as Ensure or Nutren (ask at the chemist) to boost his food intake. If he is very highly strung or active, then it may help to do relaxing exercise like yoga and deep breathing. Hopefully he will gain the additional weight when he reaches the end of his puberty.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.