In this study, melanin index was determined by Mexameter at six sites to represent the skin of the sun-exposed and sun-protected areas
So, which vitamin deficiency causes hair loss
The question then arises: What is the explanation for this unique apparent regulation of Se-GSH-Px by organic selenium? Regulation of the GSH-Px system The glutathione (GSH) system, comprising oxidized and reduced GSH and the two enzymes GSH peroxidase and GSH reductase, is closely related to the metabolism of two amino acids, cysteine (Cys) and methionine (Met) (Figure 3) via the key intermediary metabolite, homocysteine
Liu W, Jiang J, Li Z, et al
2018 meta-analysis: Three RCTs examining 13 g/day L-carnitine or ALCAR for 26 months in 201 men aged 2040 with infertility found supplemental carnitine improved sperm motility by 7.84% and morphology by 4.91% but did NOT affect sperm concentration [3][46]