What is the Connection Between Vitamin D and Fatigue?

Although there have not been many conclusive tests that explore the connection between vitamin D and fatigue, research does suggest a few correlations. Some indications of hypovitaminosis D, otherwise known as a vitamin D deficiency, may include vulnerability to viruses, depression, and cardiovascular problems. These effects have also been known to cause fatigue. Therefore, it follows that insufficient doses of vitamin D could be a cause of fatigue.

Fatigue is a condition that might affect a patient either physically, mentally, or both. It is a lasting feeling of exhaustion that is not easily cured by a typical night of sleep. The possible causes of fatigue may vary, though they are often difficult to diagnose.

More doctors are now becoming aware of the potential connection between vitamin D and fatigue. Vitamin D can have many health benefits such as strong bones and muscles, improved mood, and a more efficient immune system. Without these benefits, it is likely that an individual could become ill, weak, or suffer from a hormone imbalance—all are causes that may lead to fatigue.

One possible link between vitamin D and fatigue has to do with the immune system. Vitamin D supports the body in defending against airborne viruses such as a cold or flu. Hypovitaminosis D may, therefore, lead to frequent or prolonged illnesses, which use a great deal of energy from the body. It can take days or even weeks for a body to fight off viruses without enough vitamin D, and fatigue may set in.

The vitamin can also stimulate the cardiovascular system. One common cause of fatigue is lower levels of oxygen in the blood and poor circulation. These facts may present another correlation between vitamin D and fatigue, suggesting that proper levels of the vitamin can help to ward off the often debilitating condition.

Low levels of many vitamins, including vitamin D, have been linked to depression and other mood disorders. Depression typically leaves an individual feeling physically and mentally exhausted. Depressed people may find it difficult to find joy in everyday activities and often feel worn out, or fatigued, as a result of a hormone imbalance.

The exact connection between vitamin D and fatigue has not yet been studied extensively. On the other hand, individuals who feel weak or exhausted or who simply want to improve overall health may want to explore the option of vitamin D supplements. While the vitamin can occur naturally in many foods, such as fish and eggs, it may be difficult to get the recommended daily intake through food alone.

Sunlight is perhaps the most abundant natural resource of vitamin D. Some studies suggest that a mere 10 to 20 minutes in the sun each day, depending on weight and skin color, could be enough to ward off hypovitaminosis D. Sunscreen may help people to avoid the pitfalls of sun exposure.