The Claim

Higher intake of total protein is associated with a 6% lower risk of all-cause mortality in adult populations.

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

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
52score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

People who consume more total protein have a 6% lower risk of dying from any cause compared to those who consume less protein.

See the scientific wording

Higher intake of total protein is associated with a 6% lower risk of all-cause mortality, based on pooled data from 31 prospective cohort studies involving 715,128 adults followed for 3.5 to 32 years, suggesting that increased protein consumption may contribute to longer life expectancy, though confounding dietary and lifestyle factors cannot be ruled out.

Why this might work

Eating more plant-based proteins lowers harmful cholesterol and toxins in the blood, reduces inflammation and cell damage, and slows down aging signals in cells, which together help prevent heart disease, cancer, and other fatal conditions.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: 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

    People who ate more protein, especially from plants, were slightly less likely to die from any cause over many years — but this doesn’t prove protein alone caused it, since healthier people often eat more protein.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.