Dementia not prevented with vitamin E, selenium, study finds

New clinical trial and cohort study investigate the preventive effects of vitamin E and selenium on elderly men with no symptoms of dementia.

Vitamin D deficiency does not increase risk and severity of obstructive sleep apnea

A recent study of elderly men found no evidence that obstructive sleep apnea (OSA) increased in severity (or prevalence) as a result of vitamin D deficiency.