Can a 5-Day diet kickstart weight loss and lower blood pressure?

NCT ID NCT05821660

Completed Knowledge-focused Sponsor: Buchinger Wilhelmi Development & Holding GmbH Source: ClinicalTrials.gov ↗

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

Summary

This study looked at how a five-day low-calorie, ketogenic diet program affects body weight and blood pressure in 64 healthy adults. Participants followed the diet remotely using a special kit. The goal was to see if this short-term diet causes measurable changes in metabolism. Since the study is complete and only included healthy people, the results will show whether the diet is safe and effective for this group.

What this could mean

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

Active substance: Five-day hypocaloric and ketogenic programme (Buchinger Wilhelmi Fastingbox)
What this could lead to: If successful, this could show that a short, remotely delivered diet program safely improves weight and blood pressure in healthy people.
What could go wrong: This is a small, completed study in healthy volunteers only, so results may not apply to people with medical conditions. Dietary changes can cause temporary side effects like fatigue or headaches.

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As listed by the trial registrant

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

HEALTHY LIFESTYLE HEALTHY NUTRITION

Contacts and locations

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Locations

Buchinger Wilhelmi Clinic

Überlingen, Baden-Wurttemberg, 88662, Germany

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