Diets
red and processed meat increases cardiovascular disease and mortality risk
In plain terms: Does eating red/processed meat raise heart-disease and death risk?
On balance yes for higher intakes (especially processed meat), though the certainty is low and contested — Baker's flat no-risk claim is stronger than the evidence in either direction.
Evidence ladder
How far up the ladder this claim has climbed. A high consensus on a low rung means "consistent so far," not "proven in people."
Top evidence so far: All trials, pooled (Meta-analysis)
How the studies fall
The evidence (7)
| Source | Grade | Stance | Quality | Finding |
|---|---|---|---|---|
| Kruger 2018 · Food Chem Toxicol | mechanism | contradicts | low | Argues heme/NOC mechanistic evidence at normal intakes is insufficient to establish red-meat colon-cancer causation (industry-linked). |
| Johnston 2019 · Ann Intern Med | meta-analysis | contradicts | moderate | NutriRECS GRADE: certainty that reducing red/processed meat lowers CV/mortality risk is LOW; recommended no change — the disconfirming anchor. |
| Vernooij 2019 · Ann Intern Med | meta-analysis | mixed | moderate | Companion NutriRECS review of dietary-pattern studies finds small, low-certainty reductions in cardiometabolic outcomes with less red/processed meat. |
| Zeraatkar 2019 · Ann Intern Med | meta-analysis | contradicts | moderate | NutriRECS meta-analysis finds only low-certainty evidence that reducing red/processed meat lowers cardiometabolic and mortality risk, disputing strong claims. |
| Bhandari 2023 · Adv Nutr | meta-analysis | supports | moderate | Highest vs lowest red/processed meat intake raised CV mortality (HR 1.23); +1.8% per 10 g/day (dose-response). |
| de Medeiros 2023 · Crit Rev Food Sci Nutr | meta-analysis | supports | moderate | Cohort meta-analysis: red and processed meat associated with higher CVD incidence and mortality, dose-dependent. |
| Neuenschwander 2023 · BMC Med | meta-analysis | supports | moderate | Replacing red/processed meat with plant foods lowered CVD, T2D and all-cause mortality risk. |
Disagree, or know a study we missed?
We grade by evidence, not opinions. The way to weigh in is to point us to a study we haven't cited (check the evidence table above first), or to flag a problem with one we have. Every submission is reviewed; if it holds up, the grade updates and shows in Science Changes Its Mind.
Opens a short form. You'll sign in with Google so submissions are tied to a real account — we don't display your identity, and we only accept a link we can verify (PubMed, DOI, ClinicalTrials.gov).
Educational only, not medical advice. Grades and scores reflect published evidence weighted by study design and quality; see the methodology.