Low vitamin D levels can cause muscle weakness, cramps and bone pain. You'll generally feel muscle weakness in your upper ...

Happily, not much sun exposure is required for many people to meet their vitamin D needs. Ten minutes of sun exposure at a UV ...

Is your hair feeling dull, weak, or falling out a lot more than usual? Check your vitamin B12 levels. While you search for ...

Pediatric patients with severe obstructive sleep apnea and a vitamin D deficiency faced more severe sleep apnea vs. those ...