It is very important to have well-balanced and nutritious diet. When a diet lacks in nutrients, it may cause a variety of unpleasant symptoms. As we can see here, deficiency of vitamin A can cause night blindness or poor vision. Deficiency of vitamin B1 can cause beriberi, symptoms would include weak muscles, and very little energy to work. Ariboflavinosisis is caused by deficiency of B2. The symptoms of ariboflavinosis deficiency include swollen and cracked lips, hair loss, reproductive problems and sore throat. Symptoms of pellagra caused by deficiency of vitamin B3 include:delusions or mental confusion, diarrhea, weakness, loss of appetite, pain in abdomen. Deficiency of vitamin B6 can cause anemia. Deficiency of vitamin B17 can cause cancer. Vitamin C deficiency can cause scurvy, which has symptom like bleeding gums. Vitamin D deficiency can cause rickets.Vitamin E deficiency is related to less fertility.
