Do you get enough vitamin B12? You'll want to make sure that you do, in order to stay healthy. Vitamin B12 does a lot of things for your body. It helps make your DNA and your red blood cells, for example. Since your body doesn't make vitamin B12, you have to get it from animal-based foods or from supplements. And you should do that on a regular basis, because your body doesn't store vitamin B12 for a long time.

How Much to Get? The answer depends on things including your age, your eating habits and medical conditions, and what medications you take. The average recommended amounts, measured in micrograms (mcg), vary by age: Infants up to age 6 months: 0.4 mcg

Babies age 7-12 months: 0.5 mcg

Children age 1-3 years: 0.9 mcg

Kids age 4-8 years: 1.2 mcg

Children age 9-13 years: 1.8 mcg

Teens age 14-18: 2.4 mcg (2.6 mcg per day if pregnant and 2.8 mcg per day if breastfeeding)

Adults: 2.4 mcg (2.6 mcg per day if pregnant and 2.8 mcg per day if breastfeeding)