Extensive animal studies support the potential role of vitamin E in reproductive functions. Zinc is essential for proper functioning of the prostate gland, and has an important physiological role in sexual maturation, fertility and reproduction. Testosterone, the main male reproductive hormone, is converted in the prostate to dihydrotestosterone, an active form of testosterone. Zinc is necessary for this conversion. One of the highest concentrations of zinc is in the male sexual organs.
Selenium is essential in human nutrition and has important antioxidant functions.
Copper helps to support the healthy functioning of the nervous system and is involved with the production and regulation of various neurotransmitters in the brain and the adrenals.