Vitamin deficiency
Being tired all the time can also be a sign of vitamin deficiency. This could include low levels of vitamin D, vitamin B-12, iron, magnesium, or potassium. A routine blood test can help identify a deficiency. Your doctor may recommend taking supplements.
What lack of nutrient causes fatigue?
Some of the most common causes of fatigue – and easiest things to test for – involve deficiencies in three minerals and two vitamins, Komaroff says. After iron comes lack of magnesium, potassium, vitamin B12 and folic acid.
What vitamins should I take if I'm always tired?
If you are feeling fatigued, eating foods rich in vitamin B12 or taking a supplement might just improve your energy levels.
