Fasting for five days: scientists track what happens when you stop eating
NCT ID NCT07155993
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study follows 300 adults with diabetes, prediabetes, or overweight who fast for at least five days at a clinic. Researchers track changes in weight, blood sugar, and well-being during the fast and for three months after, using questionnaires, continuous glucose monitors, and home blood tests. The goal is to understand how the body adapts to prolonged fasting and the return to normal eating.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
medically supervised long-term fasting (5+ days) followed by structured food reintroduction
What this could lead to
If successful, this study could provide practical guidance on how fasting affects metabolism and weight, helping people use fasting safely for health benefits.
What could go wrong
This is an observational study, not a treatment trial. Results may not apply to everyone, and fasting can cause side effects like dizziness or nutrient imbalances. The study relies on self-reported data, which can be less reliable.
Disclaimer
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This is a summary of
the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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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
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Locations
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Buchinger Wilhelmi Klinik
Überlingen, Baden-Wurttemberg, 88662, Germany