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Current concepts in the diagnosis of cobalamin deficiency

Other symptoms of B12 deficiency include pale skin, loss of appetite, heart palpitations, unexplained weight loss, depression, poor memory, confusion, and soreness of the mouth or tongue

10.24875/RIC.20000208 54 Van WalravenC.AustinP.NaylorC

If you've ever found yourself asking, "Why do I feel worse after my B12 injection?" you're not alone

Conversely, while a deficiency in Vitamin B12 may not cause weight gain, it can decrease energy levels and contribute to fatigue, making it harder to stay active and manage/maintain your weight properly

Clearer skin and a more radiant complexion are other advantages that some people claim to have experienced