No evidence studies found yet.
Pre-20th century human populations exhibited prevalence rates of cardiovascular disease, obesity, and type 2 diabetes below 1–5%, coinciding with minimal consumption of industrially processed seed oils.
The historical incidence of acute myocardial infarction in the United States was negligible prior to the widespread introduction of industrial seed oils in the early 20th century.
Prior to the widespread consumption of industrial seed oils and refined carbohydrates in the early 20th century, clinical cases of atherosclerotic cardiovascular disease were exceptionally rare in human populations consuming diets high in animal fats.
As Americans started eating more processed vegetable oils, rates of insulin resistance and diabetes went up at almost the same time—this timing suggests the two might be connected.