Common Signs of Low Vitamin B12

Vitamin B12 is an essential nutrient that helps the body produce red blood cells, support nerve function, and maintain healthy DNA.

Because the body cannot produce vitamin B12 on its own, it must be obtained through food or supplements. It is mainly found in animal-based foods such as meat, fish, eggs, and dairy products.

People who avoid these foods, including some vegetarians and vegans, may be at higher risk of low vitamin B12 levels if they do not use fortified alternatives or supplements.

One of the earliest signs of deficiency is persistent tiredness. This can occur when the body cannot produce enough healthy red blood cells to efficiently carry oxygen.