People who say they sleep either too little (6 hours or less) or too much (9 hours or more) tend to have a higher chance of having a heart problem in the next 10 years, compared to those who sleep between 6 and 9 hours — at least in this group of Hispanic/Latino patients.

People who sleep between 6 and 9 hours a night seem to have the lowest risk of heart problems in the next 10 years — those who sleep less or more than that have higher risk, at least in Hispanic/Latino adults.

People in this group who say they sleep 6 hours or less each night are more than twice as likely to die from any cause compared to those who sleep 6 to 9 hours—even if they have heart problems or sleep apnea.

People in this group who say they sleep 9 hours or more each night are nearly four times more likely to die from any cause than those who sleep 6 to 9 hours, even when you account for heart problems and sleep apnea.

People who say they sleep too little or too much are more likely to die from heart problems, but only those who actually sleep too little (measured by devices) show a clear link—so sleeping a lot might just mean you’re sick or your sleep is bad, not that you’re sleeping too much.

People who sleep less than 7 hours a night are more likely to develop heart problems like heart attacks or irregular heartbeats than those who sleep 7 to 9 hours.