Some smoke just a few cigarettes each day. Others smoke only on weekends, with certain friends or in certain places. The habits of light, occasional or non-daily cigarette smokers are so varied that experts have yet to come up with a single label for them – though the term “chippers” gets some use. That term “comes from the world of heroin addiction,” says Thomas Glynn, director of cancer science and trends at the Amer ... Jump to full article >>