N-acetyl-L-cysteine (NAC) restores cellular glutathione, a key antioxidant that drops with age. Studies suggest NAC reduces brain aging and the risk for neurodegenerative conditions.
Glutathione and Brain Aging, NAC Boosts Glutathione, Modulating Neurotransmitter Systems, Reducing Homocysteine Levels, Protect the Brain with NAC, Trials of NAC for Disorders of the Brain, Summary, References.