As the NHS explains, "this is uncommon, but can happen if you have a vegan diet, follow a fad diet or have a generally poor diet for a long time".W
As the NHS explains, “this is uncommon, but can happen if you have a vegan diet, follow a fad diet or have a generally poor diet for a long time”.
What foods contain B12?
Vitamin B12 is found naturally in a wide variety of animal foods and is added to some fortified foods.
According to the National Institutes of Health (NIH), plant foods have no vitamin B12 unless they are fortified.
You can get recommended amounts of vitamin B12 by eating a variety of foods including the following:
- Beef liver and clams, which are the best sources of vitamin B12.
- Fish, meat, poultry, eggs, milk, and other dairy products, which also contain vitamin B12.
Some breakfast cereals, nutritional yeasts and other food products that are fortified with vitamin B12. To find out if vitamin B12 has been added to a food product, check the product labels.