`My grandpa smoked like a chimney, drank like a fish, ate whatever he wanted, and still lived to a ripe old age. But my friend was a tee-total, non-smoking veggie and still got cancer ¿ so how can you say that her lifestyle caused it?¿
Sound familiar? Many of us know someone who fits the first description. And at the other end of the spectrum, some people who lead the healthiest of lifestyles are still unfortunate enough to develop cancer.