# Undernutrition Linked to Faster Cognitive Decline in Older Adults

*Undernutrition impacts on cognitive performance trajectories in older adults: The collaborative PROMED-COG pooled cohorts study.*

- **Evidence Level**: Moderate
- **Publication Types**: Journal Article
- **Journal**: Nutrition (Burbank, Los Angeles County, Calif.)
- **Sample Size**: 3,852 adults aged 65 to 96
- **Authors**: Ravelli A, Prinelli F, Noale M, Conti S, Devita M, Ceolin C, Brennan L, de Groot LCPGM, McEvoy CT, Maggi S, Sergi G, Trevisan C
- **Published**: 2026-03-19
- **Topics**: nutrition, cognitive decline, aging
- **DOI**: https://doi.org/10.1016/j.nut.2026.113215
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42035517/

## Summary

Older Italians who were undernourished at the start of the study were much more likely to fall into the steepest cognitive decline group over nine years. About 27% of fast decliners were undernourished, versus 12% of those who stayed sharp. The link was strongest for visible signs like low body weight or muscle loss. Cause and effect run both ways here, since cognitive decline can also reduce eating.

## Practical Takeaway

This study suggests checking nutritional status in older adults may help flag those at risk of faster cognitive decline.

---

_Canonical: https://longevity-switzerland.com/en/research/undernutrition-linked-to-faster-cognitive-decline-in-older-adults · Part of Longevity Cities · Updated 2026-03-19_