Irregular sleep may increase risk of heart attack, stroke

A study in the Journal of Epidemiology and Community Health says people who sleep and get up at noticeably different times ...
An irregular sleep-wake cycle is associated with a heightened risk of major cardiovascular events, such as heart attack and ...
Irregular sleep patterns increase the risk of conditions such as stroke, heart failure and heart attacks, regardless of whether people are getting enough sleep overall, a recent study found.