Your body needs vitamin B12 to create DNA, red blood cells and nerves.
As awesome as your body is, it can’t make B12 on its own; it relies on dietary or supplement sources to build up its required 2.4 micrograms per day.
But roughly 10-13% of all U.S. adults aren’t able to absorb natural B12 from food, no matter how much they take in. Other people, such as vegans, don’t eat enough dairy or meat to reach that amount.
People over the age of 50 are also at risk, as are those suffering from celiac disease or alcoholism.
Luckily, a vitamin B12 deficiency is fairly easy to spot and correct. Let’s take a look at the symptoms.