SAMA HOOLE: When seed oils are heated, they break down into aldehydes. Aldehydes are the same toxic compounds found in: Cigarette smoke, Car exhausT, Formaldehyde (embalming fluid)

When seed oils are heated, they break down into aldehydes.

Aldehydes are the same toxic compounds found in:
- Cigarette smoke
- Car exhaust
- Formaldehyde (embalming fluid)

Your "healthy" stir-fry cooked in sunflower oil contains the same toxic compounds as passive smoking.…

— Sama Hoole (@SamaHoole) February 15, 2026

When seed oils are heated, they break down into aldehydes. Aldehydes are the same toxic compounds found in: - Cigarette smoke - Car exhaust - Formaldehyde (embalming fluid) Your "healthy" stir-fry cooked in sunflower oil contains the same toxic compounds as passive smoking. But nobody mentions this because it would require admitting that heating seed oils creates carcinogens. The aldehydes integrate into food. You eat them. They damage DNA, promote cancer, create oxidative stress. Every time you cook with seed oils above 180°C, you're creating toxic compounds in your food. This isn't theoretical. Measurable aldehyde levels in seed oil cooking are comparable to industrial pollution.

But at least it's plant-based pollution.