Pickart and Margolina's research on the 4,000+ genes influenced by GHK-Cu describes a pattern of cumulative repair rather than diminishing returns
The Arabidopsis mitochondrial protease FtSH4 is involved in leaf senescence via regulation of WRKY-dependent salicylic acid accumulation and signaling
Or, hit the sauna (wet, dry or infrared) a few times a week, for a relaxing way to help stimulate glutathione production
Glutathione and NAC are also fairly exceptional due to their thiol group, which contains sulfur
However, many endogenous and exogenous factors such as free radicals produced by chronic inflammation in the body, certain metabolites of cells and gut microbiota [14], as well as chemical carcinogens in the environment [15], ultraviolet (UV) radiation attack intracellular DNA and may cause a variety of DNA damage [3]