Which maca root color is best for male?

Black maca is often associated with potential benefits for male sexual health, stamina, and fertility. A scientific review from 2009 Gonzales et al. compiled research from animal and human studies on 3 different types of Maca (yellow, black, and red maca). The review found Black Maca to have the most beneficial effect on sperm production when compared to yellow maca and red maca.