Many ascribe such changes in older people as effects of typical aging; instead, however, some researchers propose that it indicates early onset Alzheimer's disease in delayed REM sleep.

Now, a study suggests that people who take significantly longer to start the dream phase of sleep, known as rapid eye movement (REM), may be experiencing an early symptom of the disease.

“The delay in REM sleep disrupts the brain’s ability to ... “If it is insufficient or delayed, it may increase the stress hormone cortisol,” she said. “This can impair the brain ...

The researchers divided the participants into early and delayed REM sleep. On average, the early group reached REM less than 98 minutes after falling asleep, while the late group reached it more ...

Fitness trackers can capture some of this information, but it is less precise. The researchers divided the participants into early and delayed REM sleep. On average, the early group reached REM less ...

People with Alzheimer’s are more likely to have delayed REM sleep People with delayed REM sleep have higher levels of toxic brain proteins amyloid and tau ...

Researchers explained that REM follows three phases of non-REM sleep, each deeper than the last. The four phases take 90 minutes or more to complete, depending on age, and a person may cycle ...

People with Alzheimer’s are more likely to have delayed REM sleep People with delayed REM sleep have higher levels of toxic brain proteins amyloid and tau Originally published on healthday.com ...