MY DAUGHTER IS 16 YEARS. SUDDENLY IN ABOUT A YEAR'S TIME SHE HAS PUT ON LOT OF WEIGHT SPECIALLY ON HIPS. HER MENSTRUAL CYCLE IS REGULAR BUT NOT MUCH, QUITE SCANTY. HER TYROID REPORT IS NORMAL. WHAT COULD BE THE CAUSE OF SUDDEN OBESITY? HAS IT TO DO ANYTHING WITH HORMONE? WHAT TEST SHOULD BE DONE TO REMEDY THE PROBLEM. SHE DOES NOT EAT THAT MUCH EITHER, JUST NORMAL DIET.