Seed Oils: The $200 Billion Ingredient Shrinking Our Brains

What if the most profitable “health food” of the last century is quietly lowering our intelligence?

From WWII engine lubricants to your pantry, vegetable oils—canola, corn, soybean, sunflower—went through an industrial process of bleaching, solvent washing, and deodorizing before being marketed as food. Now they’re a $200 billion global industry.

But the science reveals a darker truth:
• These oils are loaded with linoleic acid, a fat that crowds out DHA—the nutrient that fueled human brain evolution.
• Populations with higher DHA (like seafood-rich Japan) score higher on intelligence and show stronger brain development.
• Populations overloaded with linoleic acid (like the U.S.) are seeing brain shrinkage, declining IQ, and spikes in ADHD, autism, and depression.

We eliminated leaded gasoline when it was proven to lower IQ.
So why are we still flooding our food supply with a substance that does the same—only slower?

This isn’t just about diet. It’s about control.
A cheaper, more profitable fat is quietly shaping the mind of the next generation.