Fruit and vegetable timing changed chemical-exposure marker patterns
In healthy adults, eating produce during light versus dark periods affected laboratory exposure-marker patterns. The abstract does not identify a consistently better eating time or demonstrate a health benefit.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
In healthy adults, the timing of fruit and vegetable consumption affected concentrations and daily patterns of several chemical-exposure markers. Some pesticide and volatile-organic-compound markers were also associated with laboratory measures of oxidative stress. The abstract does not show that either eating period reduced overall exposure, prevented disease or was healthier than the other.
The abstract gives no marker-specific effect sizes or clear directions of change. Laboratory markers were the reported outcomes, so the findings do not establish a clinical benefit from changing eating times.
What researchers found
Food-associated chemical-exposure biomarkers
Produce consumption during light versus dark periods over 14 days; marker-specific directions and magnitudes were not reported.
What a biomarker shows
A biomarker is a measurement used to track a biological signal, here chemical exposure. The study examined patterns in these measurements; a changed concentration is not itself evidence of reduced disease risk or improved health.
Links between laboratory measures
Some pesticide and volatile-organic-compound measurements were associated with markers of oxidative stress involving fats. These were relationships between laboratory measurements, not evidence that a particular contaminant caused disease or that eating timing prevented it.
The original publication
An exposomics analysis of 125 biomarkers of exposure to food contaminants and biomarkers of oxidative stress: a randomized cross-over chrononutrition trial of healthy adults.
Kunde H, Ioannou EI, Chovatiya J et al.
Environ Int · 2025
- PubMed ID
- 40749540
- Record checked
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