Seed Oils: Why They're Controversial and What to Use Instead
Why are seed oils controversial? Learn which oils to avoid and what healthy cooking fats to switch to today.
If you've spent any time in health and wellness spaces, you've probably heard the term "seed oils" thrown around as something to avoid. But what exactly are seed oils, why are they controversial, and should you actually be worried?
What Are Seed Oils?
Seed oils (sometimes called "vegetable oils") are oils extracted from the seeds of plants using industrial processes. The most common ones include canola, soybean, sunflower, and corn oil.
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The Omega-6 Problem
The primary concern with seed oils is their extremely high concentration of omega-6 polyunsaturated fatty acids (PUFAs), particularly linoleic acid. While omega-6 fats are technically essential, the modern diet provides them in massive excess.
Historically, humans consumed omega-6 and omega-3 fatty acids in a ratio of roughly 1:1 to 4:1. Today, the average Western diet has a ratio closer to 20:1 — and seed oils are the primary driver of this imbalance.