(CNN) — Sleeping and waking up at different times is associated with an increased risk of heart attack and stroke, even for people who get the recommended amount of sleep, according to new research.

Japan suffers an estimated annual economic loss of around ¥1 trillion due to the "social jet lag" mismatch between sleep ...

Inside every muscle cell, there’s a clock. Not the kind that ticks on your wall or buzzes on your wrist, but a natural timekeeping system that helps your body stay in rhythm. This clock controls when ...

A new large-scale study has found that irregular sleep-wake cycles can significantly increase the risk of serious cardiovascular events, including heart attack and stroke — even for individuals who ...

OTTAWA, Canada — Even if you’re getting enough sleep overall, inconsistent bedtimes and wake-up times might be putting your heart at serious risk. An international study shows that people with ...

Poor sleep isn’t just about not getting enough hours. It’s also about when you sleep, how regular your schedule is, and whether your rest gets interrupted. And according to new research from 88,461 ...

A groundbreaking analysis of sleep patterns and metabolic health has revealed a concerning connection between irregular sleep schedules and the development of type 2 diabetes. Drawing from data on ...

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