It was Christmas week 1990 in Oakland. Steven Bloom was wandering through The Lot, that timeless gathering of hippies that springs up in the parking lot before every Grateful Dead concert, when a Deadhead handed him a yellow flyer.
Because of the general safety of the vitamin, upper limits for normal intake do not exist. If your blood values for the vitamin fall below a range of 170 to 250 picograms per milliliter, you may develop a B12 deficiency.
Vitamin B12, also called cobalamin, is a nutrient you need for good health. Itâs one of eight B vitamins that help the body convert the food you eat into glucose, which gives you energy.Vitamin B12 has a number of additional functions.It is needed for: 1  production of elements of DNA.itamin B12, also called cobalamin, is a nutrient you need for good health. Itâs one of eight B vitamins that help the body convert the food you eat into glucose, which gives you energy. Vitamin B12 has a number of additional functions. It is needed for: