This is not the first research to highlight a connection. Researchers issue warning after discovering unexpected link to ...

New research says the popular sleep aid melatonin may negatively impact the heart — but experts caution that more research is ...

In a preliminary study of adults with insomnia, researchers found as association between long-term melatonin use and heart failure. People who took the supplement for at least one year also were more ...

Researchers have found evidence that taking melatonin for a year or more is associated with a higher risk of heart failure.

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 ...

Peripartum cardiomyopathy (PPCM) is a rare but life-threatening condition that can affect women with previously healthy ...

Review article on PPCM in The Lancet brings the medical community and midwives up to date.