If you feel fatigued often, it could be due to a lack of vitamin D. Some new research showed us that vitamin D improves mitochondrial function in our muscles.
Subjects whose vitamin D levels were low and reported being fatigued were supplemented with vitamin D.
After the treatment period, the subjects vitamin D levels were corrected and fatigue was reduced both by self-reporting and by testing of mitochondrial function.
These statements have not been evaluated by the Food and Drug Administration. Research and nutritional information included is not intended to diagnose, treat, prevent, or cure any disease and should not be used for medical diagnosis or treatment. Consult your physician before initiating any new dietary or supplement program. References available by request.