National Nutrition Week is being observed throughout India from 1st to 7th September. Common nutritional deficiencies can cause a range of chronic health problems. Normally, nutritional deficiencies can be a bit hard to spot and can cause a wide range of symptoms including lack of energy, headaches, insomnia and muscle pain, something that we blame on a hectic life. This is why vitamin and mineral deficiencies can be so hard to spot. According to the National Diet and Nutrition Survey, many of us are eating less than the recommended amount of some key nutrients and are at risk of deficiency.