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.
â¢ Low levels of vitamin B 12 can cause pernicious anemia. Vegetarians who eat no animal products and the elderly who absorb less vitamin B 12 are most at risk. â¢ Vitamin B12 is found only in animal foods and fortified foods.People who avoid all animal products should look for meat alternatives, such as soy products fortified with vitamin B 12.â¢ Ten to thirty percent of older people may not absorb vitamin B 12 well. Vitamin B12 is found only in animal foods and fortified foods. People who avoid all animal products should look for meat alternatives, such as soy products fortified with vitamin B 12. â¢ Ten to thirty percent of older people may not absorb vitamin B 12 well.