Fruits and Veggies Prevent Cancer? Not So Much, It Turns Out - Shots - Health News Blog : NPR

Fruits and Veggies Prevent Cancer? Not So Much, It Turns Out - Shots - Health News Blog : NPR: "But in the general population, the studies tend to draw more health-conscious people who eat better. So, researchers end up comparing healthy people who happen to eat more fruits and veggies to cancer patients more likely to eat like a truly representative population. That makes it look like eating fruit and veggies is associated with noncancerous healthiness."