Even if you're eating a balanced diet, you may be missing out on crucial vitamins and minerals -- and it may be causing low energy levels. That's because your body depends on certain vitamins, minerals, and other compounds to create the chemical reactions responsible for energy metabolism. In particular, deficiencies of magnesium, vitamin B12, and vitamin D -- nutrients that can be hard to obtain from food alone -- may contribute to a lack of energy. Digestive problems such as irritable bowel syndrome and celiac disease, alcohol overuse, and even stomach-acid-blocking medications can also affect nutrient absorption.
The first step in resolving a nutrient deficiency is to address underlying medical or lifestyle issues that may be causing it. That said, some supplements can complement a healthy diet. To help normalize energy and prevent deficiencies, take a good multivitamin-multimineral supplement that contains all the B vitamins as well as a calcium/magnesium/vitamin D supplement with at least 400 mg of magnesium and 1,000 IU of vitamin D.