Planetary Health Diet tied to lower frailty odds in older Spaniards
Across both cohorts, the odds ratio for frailty was 0.52 when comparing Spanish older adults in the highest versus lowest third of diet scores.
The Journals of Gerontology, Series A
An observational study followed community-dwelling Spanish adults in two cohorts: 3,289 people aged 60 or older and 3,273 aged 65 or older. Researchers scored their starting diets against the Planetary Health Diet, a plant-based eating pattern promoting environmental sustainability. They repeatedly assessed frailty, defined as at least three of five features: exhaustion, low physical activity, slow walking, muscle weakness and unintentional weight loss.
Higher diet scores were associated with lower odds of frailty after accounting for participants’ backgrounds, lifestyles and health. Comparing the highest and lowest thirds of scores, the pooled odds ratio was 0.52; a ratio below 1 indicates lower odds. Higher scores were primarily linked to lower odds of low physical activity. Vegetables and fruits showed the strongest independent associations with frailty among individual food groups.
Why it matters
Frailty is a major contributor to disability and other poor outcomes in older adults. The findings support a potential role for sustainable, plant-based eating patterns in healthy aging.
Caveats
The observational design cannot establish that the diet reduced frailty. The findings came from older adults living in the community in Spain.
The paper
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José Luis Peñalvo, Ligia J Domínguez, Fernando Rodríguez-Artalejo,School of Medicine
The Journals of Gerontology, Series A · 6 Oct 2026
