Watermelon shows promise for lowering blood pressure in Pre-Hypertension

NCT ID NCT05892328

Completed Disease control Sponsor: Clinical Nutrition Research Center, Illinois Institute of Technology Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed pilot study tested whether eating watermelon can lower blood pressure in adults with pre-hypertension. 39 healthy overweight adults ate either 1 cup, 2 cups of watermelon, or a control (Italian ice) daily for 4 weeks. Researchers measured 24-hour blood pressure and other heart health markers to see if watermelon has a dose-dependent effect.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: watermelon flesh
What this could lead to: If it works, this could point toward a simple dietary approach to help manage pre-hypertension and reduce cardiovascular risk.
What could go wrong: This is a small pilot study with only 39 participants, so results may not apply widely. The effect on blood pressure may be small or not clinically meaningful.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

cardiovascular disorder Prehypertension

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CARDIOVASCULAR DISEASES PRE-HYPERTENSION

Contacts and locations

Locations

Clinical Nutrition Research Center

Chicago, Illinois, 60616, United States

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Other studies related to the condition(s) this trial covers.