Medically reviewed by Jonathan Purtell, RDN Vitamin B12 helps your body make red blood cells, produce energy, and keep your ...

The best vitamin B12 foods include clams, liver, and trout. Fortified foods, such as cereals and nutritional yeast, are plant-based alternatives. Learn more here.

Dear I.F.: The DV (a replacement for what we used to call the recommended daily allowance, or RDA) for vitamin B12 is 2.4 mcg. (There are 1,000 micrograms in a milligram, so 2.4 mcg is a very small ...

But the men who showed the greatest increased risk for lung cancer were exceeding the RDA by a lot—15 times more than the RDA for vitamin B6; 20 times more than the RDA for vitamin B12.

Vitamin B12 The RDA for vitamin B12 (cobalamine) is 2.4 mcg for people over age 14. The RDA for children is dependent on age. No tolerable upper intake level for vitamin B12 is established.

Bonus nutrients include about double the RDA of B12 and 72 percent of your daily selenium. Avoid Mercury-laden wild striped bass (0.22 ppm). 5.

The recommended dietary allowance (RDA) for vitamin B12 for people over 14 is 2.4 micrograms (mcg). However, you may need to take more or less, depending on your age, lifestyle, and specific ...

Vitamin B complex refers to the eight B vitamins. Learn more about each of these vitamins, the benefits of B-complex supplements, and who should use them.

Vitamin B12 is an essential nutrient that plays a vital role in keeping you healthy. Here are 8 ways that this vitamin benefits your health, based on science.

If you're vegetarian (or just not a big meat eater), you can prevent vitamin B12 deficiency by eating more of these nine vitamin B12-rich foods.

RDA: 1mcg for every kilogram of body weight (upper limit: 1mg). Get it: 1g of kale or 12g of broccoli. Risk factor: If you’re on blood-thinning drugs, avoid K-containing supps.