If your levels are low, you may feel tired, sluggish, and stuck no matter how clean you eat
Studies have shown that cats with IBD, intestinal lymphoma, and pancreatitis tend to have much lower levels of B12 in their bodies than healthy cats
Nonetheless, a meta-analysis of the Chinese population concluded that patients diagnosed with MS and relapsing MS had lower serum B12 levels than controls, whereas remitting patients did not exhibit this difference [131]
Vegans, vegetarians, and people with restrictive diets may not consume enough B12, making ongoing injections valuable
Allergic reactions: Hypersensitivity to B12 or other components can manifest as urticaria, pruritus, orrarelyanaphylaxis
Drawing blood technology and disease identity in twentieth-century America (Johns Hopkins Paperbacks ed.)