Does low vitamin D cause fatigue?
John Thompson
Updated on January 07, 2026
Symptoms of vitamin D deficiency can include muscle weakness, pain, fatigue and depression. To get enough D, look to certain foods, supplements, and carefully planned sunlight.
vitamin D deficiency
Vitamin D deficiency or hypovitaminosis D is defined as a vitamin D level that is below normal. It most commonly occurs in people when they have inadequate sunlight exposure (in particular sunlight with adequate ultraviolet B rays (UVB)).
https://en.wikipedia.org
› wiki › Vitamin_D_deficiencyWhat happens when your vitamin D is low?
Vitamin D deficiency occurs when the body doesn't get enough vitamin D from sunlight or diet. Vitamin D deficiency can cause loss of bone density, osteoporosis, and broken bones. Vitamin D is sometimes called the sunshine vitamin because your body makes it from cholesterol when your skin is exposed to sunlight ( 1 ).Does low vitamin D affect energy levels?
Low energy or fatigue is a common symptom of vitamin D deficiency. That's because vitamin D seems to help mitochondria—the part of a cell that generates energy—use oxygen and power various parts of the body, including muscles. Large studies on otherwise healthy people taking a daily vitamin D supplement are lacking.How quickly does vitamin D work for fatigue?
One study found that low vitamin D was high among people with fatigue and that their symptoms improved after five weeks of vitamin D supplements, while a small study from Newcastle University found that low vitamin D could cause fatigue as low levels cause mitochondria, the 'power stations' in every cell of the body, ...Which vitamin D is best for fatigue?
In conclusion, our study shows that a single dose of oral 100,000 IE vitamin D3 is an effective, well-tolerated, and economical treatment strategy for healthy adults who report fatigue.My Vitamin D Deficiency Story: How I Got Rid Of My Fatigue - Finally!
What is the best vitamin for tiredness?
The 5 Best Vitamins for Energy & Tiredness
- Vitamin B1 (Thiamin) ...
- Vitamin B2 (Riboflavin) ...
- Vitamin B3 (Niacin) ...
- Vitamin B5 (Pantothenic acid) ...
- Vitamin B6 (Pyridoxine)
Does vitamin D improve fatigue?
Our results showed that 100,000 IE single dose vitamin D treatment lead to a significant improvement in fatigue in the vitamin D group compared with the placebo group. Moreover, improvement in fatigue modestly but significantly correlated with the change in 25(OH)D levels among all participants.Will taking vitamin D give me more energy?
Vitamin D is vital for making our muscles work efficiently and boosting energy levels, new research from Newcastle University has shown.Does low vitamin D affect sleep?
Research links vitamin D levels to sleep quality. In fact, several studies associate low levels of vitamin D in your blood to a higher risk of sleep disturbances, poorer sleep quality and reduced sleep duration ( 9 , 10 , 11 ).Which of the following illnesses can be caused by a lack of vitamin D?
Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities.Is vitamin D deficiency serious?
If left untreated over time, vitamin D deficiency can lead to serious bone disorders. For example, severe and long-term vitamin D deficiency may result in rickets or osteomalacia.How can I raise my vitamin D levels quickly?
You can raise your vitamin D levels quickly in three main ways: Getting outside and exposing your skin to sunlight. Taking a vitamin D supplement.
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Eat foods rich in vitamin D
- Cod liver oil*
- Trout*
- Salmon*
- Mushrooms*
- Fortified dairy and non-dairy milks.
- Fortified cereals.
- Sardines.
- Eggs.