Gut bacteria diet may boost weight loss after surgery

NCT ID NCT07268508

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a special diet that promotes a diverse gut microbiome can help people lose more weight and keep it off after bariatric surgery. Sixty adults aged 25-65 who are scheduled for weight-loss surgery will be randomly assigned to receive either standard nutritional advice or advice focused on increasing gut bacteria diversity. Researchers will track changes in gut bacteria, eating habits, taste, and overall health for one year after surgery.

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Conditions

The condition(s) this trial relates to.

Food Preferences Obesity obesity disorder

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Centre de recherche en nutrition humaine de Rhône-Alpes

    NOT_YET_RECRUITING

    Pierre-Bénite, 69310, France

    Contact Email: •••••@•••••

  • Hospital Edouard Herriot, digestive surgery department

    RECRUITING

    Lyon, 69310, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Hôpital Lyon sud, Endocrinology Diabetes Nutrition department

    NOT_YET_RECRUITING

    Pierre-Bénite, 69310, France

    Contact Phone: •••-•••-•••• Email: •••••@•••••