Gut Microbiota Diversity and Composition Across Shift Types and the Effects of Walnut Supplementation—An Observational and Interventional Study

Feb 27, 2026International journal of environmental research and public health

Gut Microbiome Differences in Work Shifts and How Eating Walnuts May Change It

AI simplified

Abstract

A significant decrease in gut microbiota diversity was observed at the end of night shifts (p = 0.03).

  • Gut microbiota composition did not change significantly between the beginning and end of shifts or with walnut supplementation.
  • Bacterial diversity remained stable during the observational phase, except for a decline noted after night shifts.
  • Walnut supplementation did not lead to a decrease in gut microbiota diversity at the end of night shifts.
  • Gut microbiota composition clustered distinctly by individual participant, indicating personal variations.
  • A healthier diet was associated with greater mean gut microbiota diversity (r = 0.64, p = 0.02).
  • The findings suggest that nutritional strategies could help maintain gut health among shift workers.

AI simplified

Full Text

Full text is available at the source.

what lands in your inbox each week:

  • 📚7 fresh studies
  • 📝plain-language summaries
  • direct links to original studies
  • 🏅top journal indicators
  • 📅weekly delivery
  • 🧘‍♂️always free