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Showing posts from October, 2021

Linoleic Acid: A Nutritional Quandary

Over the course of the twentieth century, there was a 20-fold increase in consumption of vegetable oils resulting both from their increased availability and from recommendations to consume these oils as an aid to lower blood cholesterol levels. This dietary change markedly increased the consumption of linoleic acid to current levels of approximately 6% of total dietary energy. While considerable research has focused on the effects of dietary linoleic acid on cardiovascular health, questions about optimum dietary levels remain. For example, meta-analyses disagree about the role of dietary linoleic acid in atherosclerosis, and recent publications indicate that linoleic acid’s reduction of blood cholesterol levels does not predict its effect on the development of atherosclerosis. Further, there are also detrimental effects of elevated dietary linoleic acid on human health related to its role in inflammation and its activity as a promoter of cancer in animals. Current data do not allow det...

demonstrates that low-carb diets—even though higher in saturated fat—produce better cardiovascular and metabolic profiles than low-fat, higher-carb diets

Medical Xpress: Low-carb diet shown to improve cardiometabolic risk profile. A clinical trial led by Boston Children's Hospital, one of the largest and most rigorous study of its kind, now challenges that thinking. It demonstrates that low-carb diets—even though higher in saturated fat—produce better cardiovascular and metabolic profiles than low-fat, higher-carb diets. The findings were published online September 28 by the American Journal of Clinical Nutrition. "Surprisingly, the low-carb diet did not adversely affect LDL ("bad") cholesterol, despite having saturated fat levels far in excess of current recommendations," says David Ludwig, MD, Ph.D., who led the study together with first author Cara Ebbeling, Ph.D.. Carbohydrates, insulin resistance, and disease While high LDL cholesterol is the traditional risk factor for heart disease, a group of other risk factors is increasingly being tied to both heart disease and diabetes: high triglycerides, low HDL...