13+ Creatine Cause Gyno. Use of creatine supplements may cause retention of water, which may look like man boobs. We study 44,541 people who take creatine or have gynecomastia.

Use of creatine supplements may cause retention of water, which may look like man boobs. Creatine will cause water retention and personally i would stay off of everything except food while. It should help you in your workouts/recovery time if taken consistently.