How just three poor nights of sleep can harm your heart

Scientists uncover the biological toll wreaked by sleepless nights

- writes Professor Annie Curtis.

Think missing sleep is harmless? A Swedish lab study says otherwise

We've long known that a lack of sleep is bad for the heart - but scientists are now starting to understand exactly how it causes harm.

In a new study from Uppsala University in Sweden, researchers found that just three nights of restricted sleeparound four hours a night - triggered changes in the blood linked to a higher risk of heart disease.