Expert profile

Walter Willett

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Last reviewed: Apr 27, 2026·First indexed: Apr 27, 2026

Expert discussions with Walter Willett

A Harvard Nutrition Legend on Saturated Fat, Dairy, Seed Oils & Longevity Walter Willett | EP#393
What you replace saturated fat with matters more than cutting it. Plant oils like olive or canola lower heart risk; refined carbs and sugar do not. Whether seed oils drive inflammation is debated, though cohort and trial data do not show added heart risk at home intake.