D-ASPARTIC ACID is on the long list of supplements boasting benefits ranging from boosting testosterone levels to improving fertility to beefing up your muscles. But is there any truth to these claims ...

Your body produces this nonessential amino acid on its own, but you can also get D-aspartic acid from foods like beef, nectarines, eggs, and asparagus.

Studies have indicated that it boosts testosterone levels, improves fertility, and reduces symptoms of schizophrenia, ...