Chocolate tested for kidney effects – but Don't get excited yet
NCT ID NCT05755217
First seen Jun 24, 2026 · Last updated Jun 30, 2026 · Updated 4 times
Summary
This study looks at whether eating a single dose of dark chocolate (70% cocoa) changes blood flow to the kidneys and blood pressure, compared to white chocolate. Researchers will use ultrasound to measure kidney blood flow two hours after eating. The study includes 32 people: healthy volunteers and those with mild-to-moderate chronic kidney disease. It's a small, early-stage study that aims to gather basic knowledge, not to prove any treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
dark chocolate (70% cocoa) and white chocolate (4% cocoa)
What this could lead to
If it works, this could help us understand whether dark chocolate has any short-term benefits for kidney function and blood pressure.
What could go wrong
This is a very small, early study (32 people) looking only at immediate effects after a single dose. It won't prove any long-term health benefits or risks.
Disclaimer
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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.
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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Department of Nephrology, Centre Hospitalier Universitaire Vaudois
Lausanne, Canton of Vaud, 1011, Switzerland
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University Hospital of Lausanne (CHUV)
Lausanne, Canton of Vaud, 1011, Switzerland