ATLANTA -- Sixty years ago, 1 million men and women signed up for the first-ever Cancer Prevention Study. They filled out surveys every few years. And the information from those million Americans led to a dramatic discovery.
Doctor Alpa Patel with the American Cancer Society is the lead researcher on CPS3, the third generation of the cancer prevention studies.
"The first study was actually set up to specifically address the question of whether not smoking caused lung cancer, and it provided the first evidence that in fact smoking is what was the causal fact, causal factor with the increase rise in lung cancer death rates we were seeing in men at that time," she said.