According to a tweet today from Press Secretary Robert Gibbs, President Obama has quit smoking,
A president’s habits, be it “the vigorous life” of Teddy Roosevelt, not wearing a hat, like Jack Kennedy, or regarding fellatio from interns as “not sex,” as Bill Clinton did, have the power to change public attitudes and conduct for better or worse. This must have been an especially difficult time for Barack Obama to quit his long-time smoking habit, which typically is a response to stress. Despite perhaps the most stressful period in his life, the President did the right thing, and as good leaders must, to set an example.
We will never know for sure how much or how many, but his responsible conduct will undoubtedly change some behavior, and save some lives.