The doctors and nutritionists advise people to take a diet rich in nutrients. The best diet is the one that has all the essential nutrients like vitamins and minerals. If the diet lacks in some particular nutrient, it can cause deficiency symptoms. Vitamin B is a very important nutrient that is required for keeping the body cells healthy. The vitamin helps you in giving the energy required for performing the various tasks and activities of life. Vitamin B is a group of many other types of vitamins. If our food lacks in Vitamin D, it leads to health problems. We will explain the symptoms of Vitamin B deficiency. Following are the top 8 signs of vitamin B deficiency.