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But they're not without side effects

Research Only: Not intended for human consumption, cosmetic application, or therapeutic use

By Alaiyka Parvez Owner, CoLaz Aesthetics Clinic The short version B12 injections are the standard NHS treatment for proven B12 deficiency, most commonly caused by autoimmune gastritis (pernicious anaemia), some medications, gut surgery, or a long-term vegan diet without fortification

The skin cancer risk cant be ignored, as people have reported existing moles becoming darker, new freckles or moles appearing and changes in pigmentation, shares Dr Ahmed El Muntasar, GP and founder of The Aesthetics Doctor Clinic