
Healthy Trans Fats Slash Diabetes Risk
Is "healthy trans fat" an oxymoron? Maybe not. Although we've learned to opt for zero trans fats and search labels for deadly hydrogenated oils, there may be an exception to the no trans fats rule. Researchers at the Harvard School of Public Health have identified a naturally occurring trans fat in dairy that may substantially reduce the risk of type 2 diabetes.
For many years, studies have shown an association between eating dairy products and lower diabetes risk. But how dairy protects against diabetes remained a mystery. The answer may lie in dairy's fat.
Trans-palmitoleic acid is a fatty acid found in milk, cheese, yogurt, and butter. It's not produced by the body. It only comes from your diet.
Palmitoleic acid, or trans-palmitoleate, is found almost exclusively in naturally-occurring dairy and meat trans fats. Unlike trans fat found in hydrogenated vegetable oils, it has not been linked to higher heart disease risk. In fact, palmitoleic acid is heart healthy. It also has anti-microbial properties and is a key compound in cell communication.
In a study published in The American Journal of Clinical Nutrition Harvard researchers analyzed data from the Multi-Ethnic Study of Atherosclerosis (MESA), a prospective cohort study designed to investigate risk factors associated with cardiovascular disease in the U.S.
In 2000-2002, they recruited 6,814 adults aged 45–84 years from six regions of the country. They measured circulating blood levels of trans-palmitoleate.
At the end of 5 years participants with the highest levels of trans-palmitoleate had 6.4% higher LDL cholestero
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