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For individuals where pigmentation has a metabolic or oxidative origin (rather than a purely superficial one), this makes a meaningful difference

Grimble - The effects of sulfur amino acid intake on immune function in humans - J Nutr - 2006 Jun

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However, you may be able to preserve the rest of your color and delay the inevitable for a bit longer by making a few lifestyle changes

Evidence for brain glial activation in chronic pain patients

Ye J, Peng J, Liu K, Zhang T, Huang W
