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Vitamin B7 (biotin) deficiency is associated with hair loss and brittle nails, but more research is needed to understand the possible benefits of B vitamins on hair, skin, and nails

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When used in conjunction with other B vitamins, vitamin B12 is even more effective for hair growthwell take a closer look at this later

However, for B12, if any part of that complex digestive process is compromised especially the intrinsic factor or the absorption sites in the intestine then a significant portion of the B12 from a tablet might never reach your bloodstream

Since one of the significant symptoms of a B12 deficiency is anemia, it stands to reason that those that raise their levels of B12 will feel more energetic and perky