The Claim

A 24-week course of 10 mg nightly melatonin supplementation does not significantly alter left ventricular ejection fraction or left ventricular end-diastolic diameter, nor does it reverse structural cardiac remodeling or improve systolic function in patients with stable heart failure with reduced ejection fraction.

Source: Melatonin supplementation improves N‐terminal pro‐B‐type natriuretic peptide levels and quality of life in patients with heart failure with reduced ejection fraction: Results from MeHR trial, a randomized clinical trial

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
74score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Taking 10 mg of melatonin every night for six months does not improve heart pumping ability or change heart size in people with a specific type of chronic heart failure.

See the scientific wording

Twenty-four weeks of 10 mg nightly melatonin supplementation does not significantly alter left ventricular ejection fraction (LVEF) or left ventricular end-diastolic diameter (LVEDD) in patients with stable heart failure with reduced ejection fraction, indicating that melatonin does not reverse established structural cardiac remodeling or improve systolic function in this population.

What the research says

1 study
  1. Study: Melatonin supplementation improves N‐terminal pro‐B‐type natriuretic peptide levels and quality of life in patients with heart failure with reduced ejection fraction: Results from MeHR trial, a randomized clinical trial

    The study confirms that taking 10 mg of melatonin nightly for six months does not change the heart's pumping ability or size in heart failure patients, even though it does improve other symptoms and quality of life.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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