Time to rethink your vegetable oil

The risk of heart disease and diabetes may be lowered by a diet higher in a lipid found in grapeseed and other oils, but not olive oil, a recent study suggests.

Researchers at The Ohio State University found that men and women with higher linoleic acid levels tended to have less heart- threatening fat nestled between their vital organs, more lean body mass and less inflammation. And higher linoleic acid levels also meant a lower likelihood of insulin resistance, a precursor to diabetes.

This finding could have obvious implications in preventing heart disease and diabetes, but also could be important for older adults because higher lean body mass can contribute to a longer life with more independence, said Ohio State’s Martha Belury, a professor of human nutrition who led the research.

But there’s a catch. Low-cost cooking oils rich in linoleic acid have been disappearing from grocery shelves, fueled by industry’s push for plants that have been modified to produce oils higher in oleic acid.

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Omega-3 and Omega-6 Fatty Acids May Help Healthy Brain Aging

Omega-3 and Omega-6 Fatty Acids May Help Healthy Brain Aging

Two new studies link patterns of polyunsaturated fatty acids in the blood to the integrity of brain structures and cognitive abilities that are known to decline early in aging.

The studies add to the evidence that dietary intake of omega-3 and omega-6 fatty acids can promote healthy aging, the researchers said. Further research is needed to test this hypothesis, they said.

The brain is a collection of interconnected parts, each of which ages at its own pace. Some brain structures, and the abilities they promote, start to deteriorate before others, said University of Illinois M.D./Ph.D student Marta Zamroziewicz, who led the new research with psychology professor Aron Barbey.

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