Its deficiency leads to whole day tiredness, loss of memory,muscle weakness,pains,tiredness,weakness,speed in heart beat,pale skin,loss of appetite,depression,loss of weight,numbness of palms,foot.
Reasons - Usage of digestive acid control medicines,atropic gastritis,auto immune disorders,vegan diet having no b 12.
what to eat ? - Fish,non veg,egg,soya,grains,diary products. may also take raw peanut,mushrooms, leguminous vegetables,nuts,milk,curd,leafy vegetables.
fruits- kiwi,banana,papaya
Use food to overcome the problem, if not cured consult the doctor and use vitamin supplements on the suggestion of doctor.