Scientists test if fingernails reveal your true diet
NCT ID NCT04933656
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study aimed to see if measuring stable carbon and nitrogen isotopes in blood, hair, and fingernails could better track what people eat compared to standard diet surveys. Researchers planned to feed healthy adults controlled meals with different sugar levels and then test the samples. However, the study was withdrawn before enrolling anyone, so no results are available.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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University of California, San Diego
San Diego, California, 92093, United States
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