- New study links melatonin and heart failure, but experts say don’t panic yet The Washington Post
- Long-term use of melatonin supplements to support sleep may have negative health effects www.heart.org
- Long-term use of melatonin supplements linked to higher risk of heart failure and death News-Medical
- Chronic Melatonin Use May Raise Risk of Heart Failure, Study Suggests Gizmodo
- Taking this supplement for more than a year could be a sign of heart problems Yahoo