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> not generalizable

But there's already a general advise on this: eat more fiber.

We're a great ape, our body evolved to process a lot of fiber from fruits and starches. It's the modern fiber-deficient diet that's really weird.

90g/day of fiber is similar to the Hadza tribe diet, where they can consume 100-150g of fiber per day.

Fiber’s the new fad supplement.

I hope you're not being serious, but they're not "supplements", they're food. You can easily get them from fruits and vegetables.

While they're not essential in short-term survival, they're essential for long-term health:

We have enough peer-reviewed studies on this.

it has been for a while, a lot of foods advertise fiber

I thought we were onto protein now?