Research
Macro partitioning
Red meat consumption is causally associated with an increased risk of colon and prostate cancer, whereas total dietary fat intake is not significantly associated with colon cancer risk.
To reduce cancer risk, prioritize reducing red meat consumption over simply lowering total fat intake. Evidence suggests red meat contains components linked to colon and prostate cancer risk that are distinct from fat content.
GoodSupportsHIGH confidence
In contrast to breast cancer, more recent data have supported a causative role for red meat in the development of colon and prostate cancers, although perhaps not entirely due to its fat content.
Why this rating
Based on multiple prospective cohort studies (NHS, HPFS) showing consistent associations with red meat but not fat.
Source
Diet, nutrition, and avoidable cancer.
W C Willett · Environmental Health Perspectives · 1995
DOI 10.1289/ehp.95103s8165
narrative_reviewCited 366×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Higher intake of fruits and vegetables provides a protective effect against lung cancer, likely mediated by phytochemicals such as carotenoids, but this protection does not extend to preformed vitamin A.Good
- Energy restriction and reduced growth rates (indicated by shorter stature) are strongly associated with reduced breast cancer incidence, whereas total dietary fat intake is not significantly associated with breast cancer risk in prospective studies.Good
Related findings · Macro partitioning
- Total daily protein intake of 1.6 g/kg/day is sufficient for maximizing resistance training-induced muscle gains, with an upper confidence interval of 2.2 g/kg/day.Strong
- Resistance exercise training combined with sufficient dietary protein intake acts synergistically to maximize skeletal muscle hypertrophy, with protein intake saturating around 1.6 g/kg/day for general populations and potentially requiring 2.0-2.2 g/kg/day for resistance-trained individuals.Strong
- Trans fats should be completely eliminated from the diet, as they increase LDL cholesterol, decrease HDL cholesterol, and are directly associated with increased coronary risk.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →