A study conducted by researchers at Newcastle University has found that vitamin D supplements may help boost energy and improve muscle function.
The UK-based team, led by Dr. Akash Sinha, gave patients with a vitamin D deficiency supplements for 10 to 12 weeks.
Post-treatment, patients reported faster recovery time and decreased muscle fatigue.
According to the researchers, poor bone health and muscle fatigue are common symptoms of a vitamin D deficiency. Researchers believe this is due to a reduced efficiency of the mitochondria, a sub-unit that provides cells with energy.
The team believes the supplements enhance activity of the mitochondria.
Of the patients I see, around 60% are vitamin D deficient and most people living north of Manchester, [England] will struggle to process enough vitamin D from sunlight alone, particularly during winter and spring. So a simple vitamin D tablet could help boost ... energy levels from within the cells, Dr. Sinha said in a statement.
Vitamin D is often called the "sunshine vitamin". While it can be derived from some foods - like salmon, eggs, milk and meat - the body can also synthesize it through sun exposure.