Researchers analyzed 11 trials with 655 adults and discovered that taking vitamin D2 supplements decreases the body's vitamin ...

Studies reveal that taking certain supplements in the evening can dramatically affect sleep quality and cause you to wake up more often at night.

Research warns that one widely used vitamin D supplement may unintentionally lower the body’s natural D3 levels.

Vitamin D deficiency is common in children with severe obstructive sleep apnea (OSA) and is associated with increased OSA severity. Lower serum 25-hydroxyvitamin D levels correlate with higher ...

We’re nearing the end of what’s been a long winter for people in many parts of the United States. In the middle and northern regions of the U.S., where winter brings not only cold but limited sun, ...

Rather than simply enduring the seasonal shift, experts suggest a proactive approach: a comprehensive "autumn health MOT." Dr ...

As the days grow shorter and the weather turns cooler, many people may feel their mood dip. For those who struggle with SAD, ...

A new study shows that vitamin D2 may reduce vitamin D3 levels, suggesting D3 is the more effective supplement for immune and overall health. A new study conducted by the University of Surrey, the ...

In a multivariable analysis of kids who were undergoing adenotonsillectomy, obstructive Apnea-Hypopnea Index (AHI) scores (which range from ≥5 to ≥30 apnea and hypopnea events per hour) were ...

Vitamin D is catching a lot of interest for its potential benefits for sleep—and for the sleep consequences that accompany vitamin D deficiencies. There’s new research that is adding to our ...