glutathione found in Glutathione: Master Antioxidant, Reducing Oxidative Stress, and Detoxification Glutathione - Wikipedia

( 1 ) For men over 30, especially those juggling professional responsibilities, family life, and trying to stay in shape, the dip in energy and mental sharpness can sometimes feel like it came out of nowhere

Urology , 74 (1), 7376

(13) Coffee Protects Against Cognitive Decline In the 10-year FINE study, older men drinking 3 cups of coffee daily had a rate of cognitive decline half that of the men who never drank coffee

hyperpigmentation (such as melasma or age spots) and for those looking to improve skin health, detoxification , and boost immunity .

They found that after seven days, there was about a 30% increase in average glutathione levels in the subjects' brains