3 Cooking Oils Worth Quietly Retiring

They're marketed as heart-healthy. Your cells disagree.

Walk down any oil aisle and you'll see the same phrase over and over: heart-healthy. Here's the uncomfortable part — a few of the most popular oils earn that label on a technicality, while doing the opposite inside your body.

1. Corn oil

Over 50% linoleic acid — the highest omega-6 load of any mainstream cooking oil. It's pulled from GMO corn using hexane, a petroleum solvent. The "heart health" claim rides on it being low in saturated fat. But that extreme omega-6 promotes the exact inflammation that drives heart disease. The marketing and the biology point in opposite directions.

2. "Vegetable" oil (it's soybean oil)

That generic bottle labeled vegetable oil? It's almost always soybean oil — the same hexane-extracted, inflammatory oil whether it's the name brand, the store brand, or the cheapest jug on the shelf. Same profile, different price tag.

3. Canola oil

The health-halo favorite. Also hexane-extracted, also heavily refined and deodorized under high heat (raw canola smells rancid, so it has to be stripped). It's lower in omega-6 than corn or soybean — but "better than the worst" isn't the same as good.

What to reach for instead

Fats that don't need a chemistry lab to get out of the plant: extra-virgin olive oil, avocado oil, or old-school butter and ghee for heat. The test is simple — could you make it in your own kitchen? You can press an olive. You cannot hexane-extract corn on your countertop.

Ask kiiwii

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