Causes of high Estrogen in men?!

Causes of high Estrogen in men?

I am a male (21) and have been diagnosed with high Estrogen. I wanted to know what are ALL the things that can cause this? (other hormones or blood chemicals........)

My Free T levels are fine.

I've done testsicle and adrenal ultra sounds which were fine. But these cannot possibly be the only things that can cause high Estrogen levels in men.

Thanks!!!

could be stress.. aging but then again ur my age at 21. maybe u release too much testosterone?.. i don't have this problem but i would like to know what causes this myself.. best wishes man.