Body Fat, Not BMI, Predicts Sperm Count and Testosterone Levels, New Study Finds

Higher body fat percentages are associated with lower sperm counts and changes in male reproductive hormones, including testosterone, according to a new study.

Plain English

If you're a man concerned about fertility, your scale might be lying to you. Researchers found that body fat percentage is a more reliable predictor of reproductive health than the standard Body Mass Index (BMI). Men with higher body fat, even those with a "normal" BMI, generally showed lower sperm...