your daughter is obese and needs a full assessment. her major weight gain occurred roughly at the time her endocrine system kicked in with her menstrual cycle. i would ask her physician to look into two conditions: cushing's disease and polycystic ovarian syndrome. the evaluations are straightforward and both are amenable to effective therapies. clearly her thyroid function needs to be assessed as well. if the family history is strong for obesity it is common for girls to express the obesity gene at time of pubescence. teens can sneak eat with the best of them so what you see her eat may not at all reflect what she's actually consuming. if the home environment includes lots of junk food sitting around and people who are themselves not practicing healthy nutrition and exercise habits then she'll emulate those habits. finally research shows that in teen girls physical activity plummets by the age of 14 or so. they literally stop moving. but they don't stop eating. thus the problem. please get the medical assessment done completely and as soon as possible.
my active 13-year-old daughter has gained a lot of weight this year. she is 5 foot 6 and weighs 198. what should we do?