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A diet high in dairy fat may be linked to a lower risk of cardiovascular disease, researchers say.
In a new Swedish cohort study published in the journal Plos Medicine, international experts have challenged the view that high-fat dairy options should be avoided because of saturated fat.
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By examining the milk fat intake in 4,150 Swedish adults – the majority of whom were women, with a median age of 60.5 years – over a period of 16.6 years, the group measured the blood levels of some fatty acid levels.
They recorded 578 incidents of cardiovascular disease and 676 deaths, noting that the risk of cardiovascular disease was lower in people with higher intakes of milk fat than in low intakes and that higher intakes were not associated. at an increased risk of death.
The consumption of dairy products in Sweden is among the highest in the world.
“Many studies have relied on the ability of people to remember and record the amounts and types of dairy products they have eaten, which is particularly difficult given that dairy products are commonly used in a variety of foods. Instead, we measured the blood levels of certain acidic fats, or “building blocks” of fats found in dairy products, which gives a more objective measure of fat intake. dairy that doesn’t rely on memory or the quality of food databases, ”Dr Matti Marklund, of Australia- based at George Institute for Global Health, Johns Hopkins Bloomberg School of Public Health and Uppsala University, explained in a communicated.
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Then, in a meta-analysis, the researchers combined the Swedish study result with 17 similar studies in other countries, involving nearly 43,000 participants in the US, UK and Denmark.
The larger analysis also linked a higher intake of milk fat to a lower risk of cardiovascular disease, creating what the George Institute considered “the most comprehensive evidence to date on the relationship between this more objective measure of milk fat consumption, the risk of cardiovascular disease and death. “
“Growing evidence suggests that the health impact of dairy products may depend more on type – like cheese, yogurt, milk and butter – rather than fat content, which has raised doubts as to whether avoiding dairy fat is overall beneficial for cardiovascular disease. health, ”lead author Dr Kathy Trieu said in a statement.
However, the study notes that it has limitations, including the inability of biomarkers to determine different types of dairy products and that most meta-analysis studies assessed biomarkers initially, which “may increase the risk. misclassification of exposure levels “.
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The researchers called for further clinical and experimental studies to “elucidate the causality of these relationships and the relevant biological mechanisms.”
“It’s important to remember that while dairy products can be high in saturated fat, they are also high in many other nutrients and can be part of a healthy diet. However, other fats like those found in seafood, nuts and non-tropical vegetable oils may have greater health benefits than dairy fats, ”Trieu added.
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