5 citations
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December 1942 in “Journal of the American Medical Association”
Choline and biotin are important for liver health and preventing certain deficiencies in animals, and more research is needed to understand their benefits in humans.
OP is exploring ways to stop or reverse greying hair, using NAC and considering PABA supplements. Some users suggest hair dye, black strap molasses, and copper as potential solutions.
A 17-year-old with thinning hair is considering using Revalid, a supplement with ingredients like biotin and zinc, based on parental recommendations. Another user suggests that supplements could help since the hair thinning doesn't seem to be androgenic alopecia.