(NBC News) It's no secret that smoking causes lung cancer.
But what about diabetes, rheumatoid arthritis, erectile dysfunction?
Fifty years into the war on smoking, scientists still are adding diseases to the long list of cigarettes' harms, even as the government struggles to get more people to kick the habit.
A new report from the U.S. Surgeon General's office says the nation is at a crossroads, celebrating decades of progress against the chief preventable killer but not yet poised to finish the job.
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