Vitamin B12 is essential for the body and can not be detrimental to a person's health. The vitamin helps produce the blood cells, and can not get enough results in a shortage. B12 deficiency, especially on Christmas Day.
So what can you do to avoid a B12 deficiency vitamin, especially on Christmas Day ?
The NHS lists a number of good sources of vitamin B12.
But there are three more you are likely to get into the big day.
Beef contains a high amount of the vitamin.
The sea fish is an excellent source of vitamin B12
Those opting for the more traditional turkey dinner do not worry, as poultry, such as turkey, chicken, goose and duck, all contain vitamin B1
Cheese is a great natural B12, especially for vegetarians.
Mozzarella, feta and brie tend to have higher amounts of the vitamin.
So there's another reason to get the cheese board for dessert.
If you do not Vitamin B12 is also available in supplement form.
Symptoms of a B12 deficiency can be mistaken for serious health conditions.
But Bupa lists six to watch out for: 
Another three signs of a vitamin B12 deficiency can be spotted when you go to the toilet.