Extra water daily may curb high blood sugar

NCT ID NCT03422848

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether drinking an extra 1.5 liters of water daily for a year could lower blood sugar in adults with signs of dehydration and high blood glucose. Nearly 800 participants were split into two groups: one received lifestyle advice plus extra water, the other only lifestyle advice. The goal was to see if better hydration could improve metabolism and reduce diabetes risk.

What this could mean

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

Active substance
water
What this could lead to
If it works, this could point toward a simple, low-cost way to help manage blood sugar levels and reduce diabetes risk.
What could go wrong
This is a completed trial, but the intervention is very simple and the effect may be small or not apply to everyone. Results may not lead to a new treatment.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • KFE, Skåne University Hospital in Malmö

    Malmö, SE-20502, Sweden

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