Having excessive fat on your body, especially in the abdominal region, is also tied to higher estrogen levels and lower testosterone production in men. (nowloss.com)
But let's give you an additional one: weight problems are a major reason for low testosterone production. (fitnessandpower.com)
However, even if you are indeed one of those unlucky few with naturally low testosterone production, there is a lot to be done here. (fitnessandpower.com)