10mg of boron for 7-days was able to;
-increase free testosterone levels by 28%
-decrease free estrogen levels by -39%
-boost DHT by 10%
There are several villages in Afghanistan with well water containing 75 mg of boron per quart of water. Men in their 90's have massive erections and can still have babies. Which completely debunks doctors and naturopaths who say a dose above 1mg is deadly. Wrong.
I purchase my boron from a compounding pharmacy. I'm taking more than 10 mg FYI.