Tonawanda News


June 25, 2013

Study: High dairy consumption may improve insulin resistance

Researchers at the University at Buffalo and the University of Manitoba have found that the consumption of high amounts of low-fat dairy food decreased insulin resistance in healthy adults. 

The high-dairy diet, though, had no ill effects on body weight, body composition, energy expenditure, blood pressure, blood glucose, blood lipid or lipoprotein responses.

“The study found that those who consumed four servings of dairy per day over a six-month period responded with a nine percent reduction in plasma insulin, and an 11 percent reduction in an established marker of insulin resistance,” said Todd Rideout, assistant professor of the department of exercise and nutrition sciences at UB School of Public Health and Health Professions.

The study evaluated 23 adults between the ages of 18 to 75, who were assessed to be healthy on a pre-study screening. 

“They completed a randomized, crossover trial of 12 months,” Rideout said.

“Our study was designed to specifically examine the effects of low-fat milk and yogurt products. This is important, as different dairy foods have been shown to elicit differential metabolic responses. Determining the specific health benefits of specific dairy products and isolated dairy bioactive components will be critical issues of future dairy-based research,” he added.

The test subjects were first randomly assigned to one of two treatment groups: high-dairy group, which supplemented its diet with four servings of dairy a day (restricted to low-fat milk or yogurt products), or low-dairy group, which supplemented its diet with no more than two serving of low fat dairy each day. Subjects did this for a six-month period.

For the second six months of the study, the high-dairy and low-dairy diet groups swapped dairy products. The high-dairy group ate low-dairy, and low-dairy group ate high dairy. During both parts of the study, baseline, midpoint and endpoint metabolic responses were examined.

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