hi welcome to HCM
-i had gone through your query and understand your concerns. i would come up with the possibility of GASTROINTESTINAL DISEASE may be the cause for your sufferings.
the possible causes may be
-DIVERTICULITIS;inflammation of balloon-like protuberance due to excess Gas pressure in intestines.often caused by additives in food,or low blood sugar
-overt or occult STEATORRHEA due to sprue,chronic pancreatitis
,or cystic fibrosis
produce wasting despite major increase in food intake.
due to inflammatory bowel disease
or peptic ulcer may be the possible causes
kindly rule out the each and every complaint for complete cure
I hope this is helpful for you, thank you