The Brief

Researchers linked melatonin to an increased risk of heart failure in a preliminary study.

The study said using melatonin for a year may be linked to a 90% higher risk of heart failure.

The study has several limitations and will be presented in an upcoming American Heart Association scientific session.

A preliminary study suggests a popular sleep aid could have negative effects on heart health, the American Heart Association said this week.

Here’s what to know about what the study is saying about melatonin and heart failure:

Melatonin and heart failure

Big picture view:

Long-term use of melatonin was associated with a higher risk of heart failure diagnosis, according to a preliminary study announced this week by the American Heart Association.

Dig deeper:

Researche

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