Sleep Apnea May Be Linked With Alzheimer's Marker

SUNDAY, March 3, 2019 -- Millions of Americans are left drowsy each day by sleep apnea, and new research suggests it might also raise their odds for Alzheimer's disease.

It isn't clear, however, if sleep apnea causes the buildup of "tau" protein tangles in the brain that are a marker for Alzheimer's, or if the increased tau helps cause the apnea, the researchers said.

Sleeping In on Weekends May Not Repay Your Sleep 'Debt'

THURSDAY, Feb. 28, 2019 -- People who are sleep-deprived during the week often try to make up for it on weekends. But a new study suggests the tactic may backfire.

Researchers found that weekday sleep loss had negative effects on people's metabolism -- and "catch-up" sleep on the weekend did not reverse it.

Evening Exercise Won't Wreck Your Sleep

MONDAY, Feb. 25, 2019 -- Sometimes, it's just not possible to fit in a workout in the morning or afternoon. But if you hit the gym in the evening, will you be up half the night?

New research says no. The Australian study found that 30 minutes of high-intensity interval training didn't have any negative impact on sleep.

Sleep Apnea Patients Who Are Drowsy During the Day at Risk for Heart Woes

WEDNESDAY, Feb. 20, 2019 -- People who suffer from sleep apnea and are very tired during the day may be more likely to develop heart disease, a new study finds.

Researchers classified people with sleep apnea into four groups based on their symptoms, including those with disturbed sleep, those minimally symptomatic, those moderately sleepy, and those excessively sleepy.

Everyday 'Triggers' May Bring on A-Fib Episodes, Study Finds

THURSDAY, Feb. 14, 2019 -- Many older Americans are diagnosed with the irregular heartbeat known as atrial fibrillation, or "a-fib." Now, research suggests that everyday foods, drinks or activities might trigger episodes of the stroke-linked condition.

The bad news: Triggers include coffee, alcohol and sleepless nights. The good news: These factors can all be avoided or reduced, according to researchers at the University of California, San Francisco.

Your Valentine May Bring You Better Sleep

THURSDAY, Feb. 14, 2019 -- Sure, he may snore. She may steal the covers. But if a relationship is solid, your partner will help you sleep better this Valentine's Day and far into the future, a new study suggests.

Good relationships in early adulthood seemed to lead to less disruptive life events, which in turn appeared to lead to better sleep years later, researchers report.