If you're applying something topically, like in a shampoo, it's much harder than you think for that to penetrate through to the skin, right down to the root of the hair, where it needs to be, says Dr
Because B12 is water-solublemeaning your body uses what it needs and flushes out the restyour dosage and injection frequency depend heavily on your starting levels and your specific wellness goals
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It can affect your eyes and joints, and may also raise your risk of heart disease or stroke
Toloza E, Hunt KK, Lau R, Rhoades K, Swisher SG , McBride W, Glaspy J, Economou J