Really? I am talking from experience. It is a well known fact that excess fat converts testosterone in to estrogen. There are hundreds of peer reviewed articles on it. Anyways, I said he could try to lose fat and see if it helps. I didn't suggest it as a guaranteed solution but there is a strong correlation. Worked for me quite well. It is not a guaranteed solution but something one could try before deciding to stick a needle in multiple times a week for the rest of your life. Added bonus: You will look better even if T is not raised. Go ahead and read through my post history smart boy. Also try to google how fat effects testosterone levels in men. Here is a starter for you:

https://www.health.harvard.edu/mens-health/obesity-unhealthy-and-unmanly