Vitamin B12 is an essential nutrient that your body essentially needs for performing very many functions. Deficiency of vitamin B12 is endemic in Indian population says a research published in the Indian Journal of Endocrinology and Metabolism. It also states that 47 per cent of the North Indian population is deficient in this nutrient. Vitamin B12 plays a significant role in your body function and its deficiency can lead to various health problems like trouble in walking shortness of breath etc. It is characterized by symptoms like tingling hands or feet pale skin fast heart rate mouth pain problem in