Macro partitioning
High intake of animal protein is associated with higher cardiovascular mortality, while high intake of plant protein is associated with lower all-cause and cardiovascular mortality, particularly in individuals with unhealthy lifestyle factors.
If you smoke, drink heavily, are overweight, or are inactive, the source of your protein matters more for your heart health. High animal protein intake increases your risk of dying from heart disease, while high plant protein intake lowers your risk of dying from any cause. Focus on getting protein from plants, especially if you have other health risks.
High animal protein intake was positively associated with cardiovascular mortality and high plant protein intake was inversely associated with all-cause and cardiovascular mortality, especially among individuals with at least 1 lifestyle risk factor.
Why this rating
Large cohort study with robust adjustment for confounders, but observational nature prevents definitive causal claims.
Source
Association of Animal and Plant Protein Intake With All-Cause and Cause-Specific Mortality
Mingyang Song et al. · JAMA Internal Medicine · 2016
DOI 10.1001/jamainternmed.2016.4182
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