People with Alzheimer's disease suffer from a degeneration of the brain, due to oxidative stress and lack of protection on a cellular level. It is known that glutathione protects and reverses specific issues due to oxidative stress.
PubMed article
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3277671
more...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5005830/
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