Scurvy These make up one of two major primate suborders, haplorrhini and this group includes humans. The strepsirrhini (non-tarsier prosimians) can make their own vitamin C, and these include lemurs, lorises, pottos, and galagos. Ascorbic acid is also not synthesized by at least two species of caviidae, the capybara and the guinea pig. There are known species of birds and fish that do not synthesize their own Vitamin C. All species that do not synthesize ascorbate require it in the diet. Deficiency causes scurvy in humans, and somewhat similar symptoms in other animals. Animals that can contract scurvy all lack the
Vitamin B12 deficiency pregnant vegetarians and vegans, and not harmful in others. Risk of toxicity due to vitamin B is low. Vitamin B deficiency in the US and the UK is estimated to occur in about 6 percent of those under the age of 60, and 20 percent of those over the age of 60. In Latin America rates are estimated at 40 percent and they may be as high as 80 per cent in parts of Africa and Asia. Vitamin B deficiency can lead to anemia and neurological disorders. A mild deficiency may not cause any discernible symptoms, but as the deficiency