Hi, I have suffered from acidity last year(which was treated as well) post which it seems i am unable to maintain healthy muscles, i mean i am 5'7 and my weight is arnd 68-70, which is fine as per bmi, thats cause my belly increased. I have observed that my arms and legs have become thin and somehow my entire chest area's width also reduced, is this caused by any hormonal imbalance? Also recently i did a vitamin d test out of curiosity, it came out to be 24.xx nmol/l, can that be a reason? Please help me, as in general I don't feel yhat active that I used to be a year or 2 ago :(.