June 14 -- FRIDAY, June 13 (HealthDay News) -- Having delayed sleep phase syndrome (DSPS) appears to be linked to irregular menstrual cycles and increased premenstrual symptoms in women, according to ...

People with a particularly bad sleep habit may be showing signs of Alzheimer's disease, a recent study suggests. Those who take a significantly longer time to enter the dream phase of sleep, known as ...

Scientists have recently shown that both the quality and the amount of sleep we get may influence our risk of developing Alzheimer’s disease. Now, a study suggests that people who take significantly ...

Dear Doctor: My mother and my sister are both night owls who stay up late and sleep late the next morning. In our family we never thought anything of it. But now it turns out their sleeping habits are ...

There are definitely “morning people” and “night owls” – but that’s usually a symptom of habits and sleep patterns that have been developed, not a legitimate syndrome. But it turns out there is some ...