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It supports the concerns of smoking researchers that we may get a whole new generation hooked on nicotine after weve made such significant gains in the past. Image: Activation maps among participants of varying degree of smoking statuses, via Yvonnes Chen.

Both authors contributed to the article and approved the submitted version

Any association between physicians and cigarettesthe leading cause of death in the United Statesis jarring given our current scientific knowledge about the relationship of smoking to disease and the fact that fewer than 4% of physicians in the United States now smoke.2 In 1930s and 1940s, however, smoking had become the norm for both men and women in the United Statesand a majority of physicians smoked.3 At the same time, however, rising public and scientific anxiety existed about cigarettes risks to health, creating concern among the tobacco companies

Smoking causes more than 480,000 U.S