Seed Oils · 7 cited studies
Research on Seed Oils & Dietary Fat
Seed-oil and saturated-fat research is genuinely contested — claiming otherwise on either side requires ignoring the literature. The strongest case for caution comes from Ramsden's recovered data: the Minnesota Coronary Experiment (BMJ 2016) and the Sydney Diet Heart Study (BMJ 2013) both showed that replacing saturated fat with linoleic-rich seed oils lowered cholesterol but increased mortality. Hooper's 2020 Cochrane review still finds saturated-fat reduction lowers cardiovascular events, primarily when replaced with polyunsaturated fat. Astrup's 2020 JACC reassessment, the PURE study (Dehghan 2017), and the Chowdhury 2014 Annals meta-analysis all challenge the simple saturated-fat-is-bad model. Our editorial position: the food matrix and replacement food matter more than the gram count of any single fatty acid. Below: the contested literature on both sides.
- Contested2016
Re-evaluation of the traditional diet-heart hypothesis: analysis of recovered data from Minnesota Coronary Experiment (1968-73)
Ramsden CE et al. · BMJ
Recovered Minnesota Coronary Experiment data: linoleic-acid swap lowered cholesterol but did not reduce mortality.
Seed OilsSource ↗ - Moderate evidence2020
Reduction in saturated fat intake for cardiovascular disease (Cochrane systematic review)
Hooper L et al. · Cochrane Database of Systematic Reviews
Cochrane review: cutting saturated fat reduces CV events ~17%; effect mainly through replacement with polyunsaturated fat.
Seed OilsSource ↗ - Contested2018
Omega-6 vegetable oils as a driver of coronary heart disease: the oxidized linoleic acid hypothesis
DiNicolantonio JJ, O'Keefe JH · Open Heart
Hypothesis paper proposing oxidised linoleic-acid metabolites as the mechanistic driver of CHD — contested.
Seed OilsSource ↗ - Contested2017
Associations of fats and carbohydrate intake with cardiovascular disease and mortality in 18 countries (PURE)
Dehghan M et al. · The Lancet
PURE study: high carbohydrate intake associated with higher mortality; high fat intake — including saturated — was not.
- Contested2020
Saturated Fats and Health: A Reassessment and Proposal for Food-Based Recommendations
Astrup A et al. · Journal of the American College of Cardiology
Reassessment paper: total saturated-fat intake itself is not associated with CVD; food matrix and replacement food matter more.
- Contested2014
Association of dietary, circulating, and supplement fatty acids with coronary risk: a systematic review and meta-analysis
Chowdhury R et al. · Annals of Internal Medicine
Meta-analysis: no clear support for replacing saturated fat with polyunsaturated fat to reduce coronary risk.
- Contested2013
Use of dietary linoleic acid for secondary prevention of coronary heart disease and death: evaluation of recovered data from the Sydney Diet Heart Study
Ramsden CE et al. · BMJ
Sydney Diet Heart Study reanalysis: replacing saturated fat with linoleic-rich seed oil increased all-cause mortality.
Seed OilsSource ↗
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