Want to Prevent the Deadliest Diseases? Eat More Fiber


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If you want to eat something for better health, make it fiber. That’s the advice from nutrition experts and the latest national dietary guidelines.

Now, a large new review of studies on fiber, published in the Lancet, shows just how beneficial fiber can be. The nutrient substantially lowers the risk of at least four diseases—many of which don’t even directly relate to the gut.

Compared to those who ate less fiber, people who ate more fiber lowered their risk of heart disease, stroke, type 2 diabetes and colon cancer, as well as their risk of dying early from any cause, by 15% to 30%. And the more dietary fiber people ate, the lower their risk. For every additional 8 grams of fiber consumed, the risk of heart disease, type 2 diabetes and colon cancer dropped by 5% to 27%.


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