I am a 17 yr old girl who has normal weight for my height but wanted to lose a few pounds. I am pretty sedentary, so I decided to eat about 1600 calories a day. I am careful about nutritious food (recent blood test showed my levels were ideal). In the last two months I've lost 5 pounds, but my period stopped completely for both months, and I have been EXTREMELY regular with moderate-heavy periods for the past 4 years, so this is bizarre. I am more curious than concerned (who wants bleeding and cramps every month?) but wondered if anyone had any ideas as to whether I am being unhealthy. I don't feel abnormal except for the fact that I always feel full, even when I have a late meal. I attributed this to eating more nutritious food. Has anyone else experienced anything like this? Could the diet have caused this, or do you think it's a coincidence?