I’m hearing about more and more people getting vitamin B injections, but then I read that this is appropriate only for people with a deficiency. What’s your advice?
Vitamin B12 works with folic acid in many bodily processes, including the synthesis of DNA, red blood cells, and the myelin sheath that speeds the conduction of signals along nerve cells.
Vitamin B12 is found in significant quantities only in animal foods. The richest sources are liver and kidney, followed by eggs, fish, cheese, and meat. Strict vegans are often told that fermented foods like tempeh are good sources of vitamin B12, but that is not true. Therefore, vegetarians should supplement their diet to get enough B12.
In order to benefit from the small amounts of B12 in food, the stomach secretes digestive juices that increase its absorption in the small intestine. Aging and the use of acid-blocking drugs can lead to impaired absorption.
Injection of B12 is not necessary, even in cases of deficiency, if the person is taking a vitamin supplement orally.
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