Are we getting enough vitamin B12? In India, most of us are vegetarians and suffer from vitamin B12 deficiency as we miss out on the only dietary sources of the vitamin that come from egg, fish, meat and dairy products. The early symptoms of the B12 deficiency include headache, tiredness, fatigue, pale skin, stomach upset, and hair loss. The condition may worsen and result in severe anemia and dementia if left untreated. In older people, this vitamin deficiency may also lead to Alzheimer’s disease. Why do we need vitamin B12? Vitamin B12 also known as cobalamin contains tons of benefits