Smokers more likely to suffer “aggressive” kidney cancer

(ALL types of smokes (pot included) are toxic and harmful--zero proof to the contrary)
Smokers who quit have less aggressive kidney cancer
By Frederik Joelving Frederik Joelving – Tue Apr 19,
NEW YORK (Reuters Health) – Researchers have found that kidney cancer is not only more common among heavy smokers, it also appears to be more aggressive.

According to a study out Monday, more than one in four smokers undergoing kidney cancer surgery had advanced stages of the disease, compared to only one in five patients who didn't light up.

Researchers say about 70 percent of people with early-stage tumors survive at least five years, whereas that number plummets to just eight percent after the cancer has begun spreading.

About one in 70 Americans, most of them elderly, develop kidney cancer, according to the American Cancer Society.

But the findings aren't all bad news. Indeed, former smokers who'd kicked the habit had a smaller chance of turning up with advanced cancer.