Spud study: could potatoes help you sleep better?

NCT ID NCT05994313

Completed Knowledge-focused Sponsor: King's College London Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study looked at whether eating potatoes every evening for 12 weeks could improve sleep quality and blood sugar control compared to eating white rice, pasta, or couscous. 71 healthy adults aged 40-80 with low fruit/vegetable intake and poor sleep took part. Researchers measured sleep efficiency and nighttime glucose levels using a continuous monitor.

What this could mean

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

Active substance: potatoes (mashed, boiled, baked)
What this could lead to: If it works, this could show that eating potatoes instead of refined starches like white rice or pasta may improve sleep and blood sugar control.
What could go wrong: This is a small, completed trial with only 71 healthy adults, so results may not apply to everyone. Dietary studies are hard to control, and findings may not be conclusive.

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

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As listed by the trial registrant

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

CARDIOMETABOLIC HEALTH

Contacts and locations

Locations

Department of Nutritional Sciences, Franklin Wilkins Building, Waterloo campus.

Lambeth, London, SE1 9NH, United Kingdom

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