The peptide naturally occurs in your body at higher levels when youre young
Many researchers believe that aging is actually caused by free radical damage and that depleted glutathione levels might be responsible for oxidative damage to our DNA. Levels tend to drop after age 45, a correlation that might explain the cellular damage we can blame for making us feel older
GSH levels positively correlate with those of active vitamin D (Jain et al., 2014), whose deficiency has been shown to play a detrimental role in COVID-19 (Grant et al., 2020
One small study found that after completing an intense resistance training workout, young men who supplemented with whey protein saw significant increases in glutathione peroxidase (enzyme activity) in comparison to a placebo group
It stimulates collagen and elastin production, improves circulation, and reduces inflammation, which helps smooth wrinkles, restore skin texture, support hair regrowth, and promote overall tissue healing
doi: 10.1111/j.1749-6632.2000.tb07020.x