Vitamin B12 deficiency, sometimes called cobalamin deficiency, happens when your body is either not getting enough or not absorbing enough vitamin B12 from the foods you eat. Vitamin B12 is an important How Long Do Vitamin B12 Injections Stay In the Body? Your body needs vitamin B12 to keep blood cells healthy and to make your nerves work right. But what happens when you run low? Here are some signs: https: wb.md 3OUOc1J Does Mounjaro Affect Your Period?: Weight Loss & The Menstrual Cycle How Do Weight Loss Injections Affect Your Period? Treated US How to Delay Your Period Superdrug Online Doctor