Diet drinks vs. sugary drinks: which helps you lose more weight?

NCT ID NCT04567108

First seen Jun 27, 2026 · Last updated Jul 17, 2026 · Updated 1 time

Summary

This study looks at whether replacing sugary drinks (like soda and sports drinks) with calorie-free alternatives (like diet drinks or water) can help adults with overweight or obesity lose weight. About 460 people who drink at least one sugary drink per day will be assigned to one of four drink groups for six months. The main goal is to see how much weight they lose and whether their waist size and taste preferences change.

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Conditions

The condition(s) this trial relates to.

Body Weight obesity disorder

As listed by the trial registrant

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

Contacts and locations

Locations

  • Brigham and Women's Hospital

    Boston, Massachusetts, 02215, United States

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