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Got milk (the full-fat kind)? A new University of Toronto study found that three daily servings of full-fat dairy didn't worsen weight, cholesterol, or insulin resistance over 12 weeks — and even improved blood pressure. The findings challenge longstanding low-fat dietary guidelines and suggest the health effects of dairy are far more complex than its saturated fat content alone.
Got milk (the full-fat kind)? For decades, nutrition guidelines have steered us toward low-fat dairy to protect our hearts. But a new Canadian study is turning that advice on its head. Researchers at the University of Toronto found that adults who consumed three daily servings of full-fat dairy for 12 weeks showed no meaningful changes in body weight, body composition, or blood cholesterol — compared to those eating little dairy at all.
Even more striking: the full-fat dairy group saw improvements in blood pressure and higher intake of calcium, protein, and vitamin D. Researchers point to the dairy matrix hypothesis — the idea that the complex physical structure of dairy foods (proteins, fats, and nutrients all bound together) changes how the body processes them, making whole dairy behave differently than its saturated fat content alone would suggest.
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Why it matters: These findings could reshape dietary counseling — especially for older adults who need nutrient-dense foods without excess calories. While larger, longer studies are needed, the research signals it may be time to revisit blanket low-fat dairy recommendations.
