I'm confused. i've read multiple different, misleading things on gynecomastia. bodybuilders inject t, have high t, get gyno. low t causes gyno.which1?

Not clear: It is believed to be a transient problem with some hormonal implication. If one excludes iatrogenic causes, it is not usually concerning medically. Normal puberty can be associated with it in young men. If concerend you may consult a doctor for some evaluation and check hormone levels. Again they tend to be normal in healthy individuals. If you have any complaints you must consult a doctor.