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Vitamin B12 for hair, skin, and nails If you have a very low level of B12, you may be prone to hyperpigmentation (dark spots) on your skin, vitiligo (light patches on your skin), mouth ulcers, eczema, and acne
What Is Vitamin B12 Exactly
Avoid exposure to light
This is especially helpful in the UK, where getting NHS testing can sometimes involve a wait
Never give methylcobalamin (vitamin B12) injection intravenously without checking the patients serum potassium levels first
All controlled studies referenced below were conducted in cell culture (3T3-L1 adipocytes, primary muscle stem cells) or rodent models (diet-induced obese mice, aged C57BL/6J mice)
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