Are seed oils unhealthy? Why are so many influencers speaking out against them? | Gideon Meyerowitz-Katz

Randomised trials of omega-6s do not show an increase in inflammation caused by the fatty acid

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If you’ve been online lately, you’ve probably been bombarded with the discourse about seed oils. Once a completely innocuous food that no one really talked about, they have become the enemy of the moment. Robert F Kennedy Jr, the secretary of health and human services in the US, has called them “toxic” and vowed to act against them. There are countless activewear-clad influencers online saying that nothing harms your health more than these products.

Which is odd, because the Australian dietary guidelines say seed oils are basically fine. You should limit them because they’re high in calories but otherwise there’s no major reason – according to the guidelines and most experts – why you should avoid them. As Prof Lauren Ball, director of the University of Queensland’s Centre for Community Health and Wellbeing, says: “There’s no convincing evidence that eating seed oils like canola or sunflower oil in normal dietary amounts harms our health. In fact, these oils contain unsaturated fats, which are generally beneficial for cardiovascular health.” Dr Jason Wu, a professor at the University of New South Wales, agrees: “The evidence base consistently points to health benefits of eating seed oils.”

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