I don't know how to start a thread on here, or it wont let me. I have to ask though, can anyone inform me of what might have caused my gyno?! I developed it when i was around 10 or 11. I am 19 now, I believe I have type 1 gyno, the mildest, but yet still noticeable. Could it be Klinefelters? Although, I'm pretty sure I don't have it, the thought it makes me very uncomfortable, and anxious. I tested my hormones a couple of weeks ago and my testosterone came back slightly above 400, which is normal but still rather low for my age, I also tested my LH and FSH, and that all came back normal, my FSH might be a little low I fear though since it was at 2.0 barely in the normal range, my LH was 5.8 though. Also I have adult sized testicles. No learning disabilities. I just have this stupid gyno and long arms ( which is a symptom of KS i hear, but then again my dad has long arms and all of his family). Could this be what caused my gynecomastia or could it have been something else? My latest suspicion is that my history of "yo-yo dieting" as an adolescent is what caused this. I have a history of skipping meals and going on significant caloric deficits to shed weight, I started this dieting since I was 10 years old (conveniently around the time that I developed gyno). I went on a pattern of gain weight during the school year, and shed weight in the summer through any means possible, I would also skip lunch in school a lot. I also got to thinking about the years where I dieted a lot, and I realized that my grades were lower; and I was pissier in the years where I shed a lot of weight and calories. The one year that I actually sought to eat consistently and healthy, I had high grades, and high motivation (Sophomore year). I also think that this frequent pattern of dieting messed up my digestive system, as now I can't process gluten, and I have some mild hypoglycemia. I also feel that I have not grown to my full potential, I am only 5'11, my dad and bro are 6 ft and 6'1. Guys what do you all think? What could have caused this? I have been freaking out for the past month, trying to figure this out, and I have been very self-conscious, I just want answers, and I certainly dont want to have Klinefelters.