> When you pour liquid cooking oil into a pan, there's a good chance you're using polyunsaturated fat. Corn oil, sunflower oil, and safflower oil are common examples. Polyunsaturated fats are essential fats.
Why would refined oils from sources that wouldn't have been available to man for 99.9% of human and pre-human existence be recommended at all? This article does nothing but repeat most of the same tropes as espoused for the past half century with no real supporting data behind it.
> A causal relation between total and LDL cholesterol in blood and CAD has long been accepted. However, despite the strength of the relation between circulating concentrations of LDL cholesterol and heart disease, one should not assume that the relation between saturated fatty acid intake and heart disease is equally strong.
...
> Considerable evidence indicates that dietary saturated fats support the enhancement of HDL metabolism. In a study of the effects of reduced dietary intakes of total and saturated fat on HDL subpopulations in a group of multiracial, young and elderly men and women, subjects consumed each of the following 3 diets for 8 wk: an average American diet (34.3% of energy from total fat and 15.0% of energy from saturated fat), the American Heart Association Step I diet (28.6% of energy from total fat and 9.0% of energy from saturated fat), and a diet low in saturated fat (25.3% of energy from total fat and 6.1% of energy from saturated fat) (25). HDL2-cholesterol concentrations decreased in a stepwise fashion after the reduction of total and saturated fat. A reduction in dietary total and saturated fat decreased both large (HDL2 and HDL2b) and small, dense HDL subpopulations, although the decreases in HDL2 and HDL2b were most pronounced. Serum triacylglycerol concentrations were negatively correlated with changes in HDL2 and HDL2b cholesterol.
> Those on a low-carbohydrate weight-loss diet who increase their percentage intake of dietary saturated fat may improve their overall lipid profile provided they focus on a high-quality diet and lower their intakes of both calories and refined carbohydrates. This trial was registered at clinicaltrials.gov as NCT01826591.
Why would refined oils from sources that wouldn't have been available to man for 99.9% of human and pre-human existence be recommended at all? This article does nothing but repeat most of the same tropes as espoused for the past half century with no real supporting data behind it.
Edit:
from: https://academic.oup.com/ajcn/article/80/3/550/4690530
> A causal relation between total and LDL cholesterol in blood and CAD has long been accepted. However, despite the strength of the relation between circulating concentrations of LDL cholesterol and heart disease, one should not assume that the relation between saturated fatty acid intake and heart disease is equally strong.
...
> Considerable evidence indicates that dietary saturated fats support the enhancement of HDL metabolism. In a study of the effects of reduced dietary intakes of total and saturated fat on HDL subpopulations in a group of multiracial, young and elderly men and women, subjects consumed each of the following 3 diets for 8 wk: an average American diet (34.3% of energy from total fat and 15.0% of energy from saturated fat), the American Heart Association Step I diet (28.6% of energy from total fat and 9.0% of energy from saturated fat), and a diet low in saturated fat (25.3% of energy from total fat and 6.1% of energy from saturated fat) (25). HDL2-cholesterol concentrations decreased in a stepwise fashion after the reduction of total and saturated fat. A reduction in dietary total and saturated fat decreased both large (HDL2 and HDL2b) and small, dense HDL subpopulations, although the decreases in HDL2 and HDL2b were most pronounced. Serum triacylglycerol concentrations were negatively correlated with changes in HDL2 and HDL2b cholesterol.
from: https://academic.oup.com/ajcn/article-abstract/109/2/433/528...
> Those on a low-carbohydrate weight-loss diet who increase their percentage intake of dietary saturated fat may improve their overall lipid profile provided they focus on a high-quality diet and lower their intakes of both calories and refined carbohydrates. This trial was registered at clinicaltrials.gov as NCT01826591.