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Vegans, and to a lesser degree vegetarians, are at risk for B 12 deficiency if they do not consume either a dietary supplement or vitamin-fortified foods. Children are at a higher risk for B 12 deficiency due to inadequate dietary intake, as they have fewer vitamin stores and a relatively larger vitamin need per calorie of food intake. [136]
Vitamin B 12 deficiency is potentially extremely serious, leading to megaloblastic anemia (an undersupply of oxygen due to malformed red blood cells), [71] nerve degeneration and irreversible neurological damage. [72] Cases of severe vitamin B 12 deficiency have been reported in vegan adults, children [73] infants and toddlers. [74]
Vitamin B 12 deficiency has been observed in between 40% and 80% of the vegetarian population who do not also take a vitamin B 12 supplement or consume vitamin-fortified food. [36] In Hong Kong and India, vitamin B 12 deficiency has been found in roughly 80% of the vegan population.
But if you’re vegan, you have a GI condition, or you’re 60-plus, you’re at a greater risk of deficiency. What Foods Contain Vitamin B12? If you eat animal products, aim for four palm-sized ...
Testing for vitamin deficiencies, including vitamin B12, she says, is “crucial,” especially in vegans and vegetarians. What does vitamin B12 do? ... Vitamin B12 deficiency symptoms.
“The risk of vitamin B12 deficiency is high, along with calcium and sometimes adequate protein intake. A strictly vegan diet takes a lot of preplanning and wide selection of plant based foods.”
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