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 ...

Don't lose sleep over headlines linking melatonin to heart failure. That's the message after some scary-sounding reports about a preliminary study involving the sleep-related supplement. It raised ...

Taking melatonin for long periods of time could be a sign of underlying heart problems. Long-term use of the popular over-the-counter sleep aid has been linked to a higher risk of heart failure and ...

A study presented at the American Heart Association's scientific meetings has raised concerns about melatonin, one of Britain's most commonly prescribed sleep aids. The findings suggest that long-term ...

A new study found that melatonin users had higher rates of heart failure, hospitalizations, and death than non-users. Experts say other health factors—like age, insomnia, or chronic conditions—may ...

Melatonin supplements may not be the harmless sleep solution millions believe them to be. A sweeping new study tracking more than 130,000 adults with insomnia has uncovered troubling connections ...

Folks using melatonin supplements as a sleep aid might be putting themselves at risk for future heart problems, a new study says. Adults with insomnia who'd been using melatonin for a year or more had ...

New research has raised concerns about the long-term use of melatonin supplements, which are widely available for purchase in the United States. With countless Americans having taken the supplement at ...

Long-term use of melatonin supplements may be linked to an increased risk of heart failure hospitalization, the American Heart Association reported Monday. Melatonin is commonly used to treat insomnia ...