Adding three daily servings of full-fat dairy to the diet for 12 weeks did not worsen blood lipids, body weight, or body composition in adults with overweight or obesity, according to a randomized controlled trial from the University of Toronto published in the Journal of Nutrition.
The trial enrolled 74 adults aged 25 to 60 with overweight or obesity and randomly assigned them to one of three diets: a low-dairy, calorie-restricted plan; an energy-neutral plan with three daily servings of full-fat dairy; or an unrestricted plan with three daily servings. All participants were counseled to follow Canada's food guide and were provided with the dairy products. After 12 weeks, the researchers found no meaningful differences in weight gain, body composition, or cholesterol levels between the low-dairy group and the two dairy groups.