Elderly individuals may be more likely to have low glutathione levels
The molecule is universally present in living cells as a cofactor for hundreds of enzymes mediating redox reactions in central metabolism
Smoking and Tobacco Use: Smoking can cause dark colour on the lips and around the mouth
Eroglu C, Unal D, Cetin A, Orhan O, Sivgin S, Oztrk A (2012) Effect of serum selenium levels on radiotherapy-related toxicity in patients undergoing radiotherapy for head and neck cancer
Arch Environ ContamToxicol 64:235242 Dixit G, Singh AP, Kumar A, Dwivedi S, Deeba F, Kumar S, SumanS AB, Shukla Y, Trivedi PK, Pandey V, Norton GJ, Dhankher OP, Tripathi RD (2015) Sulfur alleviates arsenic toxicity by reducing its accumulation and modulating proteome, amino acids and thiol metabolism in rice leaves
2002;283:G187G195