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What Vitamin Deficiency Affects Your Nails? [Solved]
Both iron and B12 are necessary for keeping nails strong and healthy. A deficiency in vitamin B12 can result in entirely blue nails, bluish-black pigments with wavy longitudinal dark streaks and brownish pigmentation ( 5 , 6 ).
Your Nails Help Diagnose Nutrient Deficiencies
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10 Clear Signs You Might Have a Protein Deficiency
In a few cases, people might observe white bands and brownish spots on
What do Your Nails Say About Your Health & Nutrition? – Dr.Berg
I explain how