Plant protein substitutions were associated with lower mortality
A cohort review linked modeled protein swaps to lower mortality, with different patterns for cardiovascular and cancer deaths.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Plant-for-animal protein substitutions were associated with lower mortality across the cohorts. The all-cause association did not differ significantly between substitution levels, which does not establish equivalence. Cardiovascular associations differed by level, but these observational data cannot show that changing protein sources causes people to live longer.
Study results for all-cause mortality varied substantially. This abstract-only summary cannot supply individual follow-up durations or absolute death risks, which the abstract omits.
What researchers found
Death from any cause: hazard ratio
Modeled 3% and 5% calorie substitutions of plant for animal protein, across cohort follow-up (durations unreported). The hazard ratio compares death rates over time; its confidence interval shows uncertainty around that relative estimate. Both favor a lower rate, without specifying an absolute reduction in deaths.
Modeled dietary changes
The cohorts tracked people over time. Researchers estimated equal-calorie substitutions from observational data, rather than randomly assigning dietary changes. This distinction limits conclusions about what caused the mortality differences.
Cause of death matters
The association with lower cardiovascular mortality was stronger at the larger substitution level. For cancer mortality, the smaller substitution showed a lower hazard; the larger substitution's estimate was not reported.
The original publication
Isocaloric substitution of animal protein with plant protein and its impact on all-cause, cardiovascular, and cancer mortality: A systematic review and meta-analysis.
Barrantes-Espinola G, Alberti P, Jaramillo-Morales E et al.
Clin Nutr · 2026
- PubMed ID
- 41996864
- Record checked
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