Shocking Study Links MELATONIN to 89% Heart Failure Spike
Brad Stanfield
11 nov 2025
Mindsip insights from this episode:
Question the validity of melatonin heart failure study results
A study linking melatonin to heart failure is questionable because the 'non-melatonin' control group likely included people taking it over-the-counter, contaminating the results.
Take melatonin two hours before sleep for optimal effectiveness
As a 'chronobiotic agent', melatonin is most effective when taken about two hours before you want to fall asleep, giving it time to shift your sleep-wake cycle.
Limit melatonin intake to avoid excessive doses
Many supplements contain over 5 milligrams of melatonin, which can deliver about 10 times the amount your body naturally produces at night.
Address insomnia to improve heart health, not melatonin
The real cause of negative heart outcomes might be severe insomnia itself, not the melatonin prescribed to treat it, as poor sleep is causally linked to heart disease.
Choose 0.3 milligrams of melatonin for safer sleep support
A dose of 0.3 milligrams (300 micrograms) is a much safer alternative that sits right in the middle of the range your body normally produces.
Leverage melatonin for heart health benefits
Contrary to recent headlines, multiple meta-analyses of randomized controlled trials found that melatonin is more likely to be beneficial for heart health.
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