Damn this is confusing: butter might be better for the heart after all

by ParentCo. April 14, 2016

Butter might not be a health food, but researchers unearthed more evidence that replacing it with vegetable oils does not decrease risk of heart disease.

A research team led by scientists at the UNC School of Medicine and the National Institutes of Health has unearthed more evidence that casts doubt on the traditional "heart healthy" practice of replacing butter and other saturated fats with corn oil and other vegetable oils high in linoleic acid.

The findings, reported today in the British Medical Journal, suggest that using vegetable oils high in linoleic acid might be worse than using butter when it comes to preventing heart disease, though more research needs to be done on that front. This latest evidence comes from an analysis of previously unpublished data of a large controlled trial conducted in Minnesota nearly 50 years ago, as well as a broader analysis of published data from all similar trials of this dietary intervention.

READ: Nutritionists stick by advice to lower saturated fat intake from meat, dairy products

The analyses show that interventions using linoleic acid-rich oils failed to reduce heart disease and overall mortality even though the intervention reduced cholesterol levels. In the Minnesota study, participants who had greater reduction in serum cholesterol had higher rather than lower risk of death. "Altogether, this research leads us to conclude that incomplete publication of important data has contributed to the overestimation of benefits -- and the underestimation of potential risks -- of replacing saturated fat with vegetable oils rich in linoleic acid," said co-first author Daisy Zamora, PhD, a researcher in the Department of Psychiatry at the UNC School of Medicine. Along with corn oil, linoleic acid-rich oils include safflower oil, soybean oil, sunflower oil, and cottonseed oil. The belief that replacing saturated fats with vegetable oils improves heart health dates back to the 1960s, when studies began to show that this dietary switch lowered blood cholesterol levels. Since then, some studies, including epidemiological and animal studies, have suggested that this intervention also reduces heart attack risk and related mortality. In 2009, the American Heart Association reaffirmed its view that a diet low in saturated fat and moderately high (5-10 percent of daily calories) amounts of linoleic acid and other omega-6 unsaturated fatty acids probably benefits the heart.

Source: Replacing butter with vegetable oils does not cut heart disease risk: Butter might not be a health food, but researchers unearthed more evidence that replacing it with vegetable oils does not decrease risk of heart disease -- ScienceDaily




ParentCo.

Author



Also in Conversations

a kid in emotional by covering face
How to Boost Your Child's Emotional Intelligence

by ParentCo.

Parents can use a simple and effective approach to raise an emotionally intelligent child and to improve their own EQ, too.

Continue Reading

two boys sitting by a tree
Why Time Outdoors Can Increase Kids' Ability to Focus

by ParentCo.

Researchers recently conducted a study exploring how green spaces surrounding children’s homes impact their cognitive development.

Continue Reading

girl and boy smiling
The Far Reaching Effects of Positive Emotions

by ParentCo.

We now know that feeling good is good for us, but how can we help our kids feel good? Here are a few suggestions based on positive psychology research.

Continue Reading