Macro partitioning
Higher intake of total protein is associated with a lower risk of all-cause mortality, with a dose-response relationship indicating that an additional 3% of energy from plant protein per day is associated with a 5% lower risk of death from all causes.
To support longevity, aim for a higher total protein intake, prioritizing plant sources. Specifically, increasing your plant protein intake by just 3% of your daily energy (e.g., adding a serving of beans, lentils, or nuts) is associated with a 5% reduction in your risk of death from all causes. This applies to generally healthy adults, not those with pre-existing kidney disease.
Intake of total protein was associated with a lower risk of all cause mortality (pooled effect size 0.94, 95% confidence interval 0.89 to 0.99, I2=58.4%, P<0.001)... An additional 3% energy from plant proteins a day was associated with a 5% lower risk of death from all causes.
Why this rating
Large-scale meta-analysis of 32 prospective cohort studies with over 700,000 participants, though observational design limits causal inference.
Source
Dietary intake of total, animal, and plant proteins and risk of all cause, cardiovascular, and cancer mortality: systematic review and dose-response meta-analysis of prospective cohort studies
Sina Naghshi et al. · BMJ · 2020
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