Yes. The health consequences of smoking are enormous. Smoking accounts for 92 to 94 percent of all lung cancers in men and 80 to 82 percent of all lung cancers in women. And second-hand smoke still presents a sizable risk for people who live in homes with a smoker. One positive note is that adult smoking rates have dropped by more than half in the 50 years since the first Surgeon General’s report was released in 1964. At that time, 43 percent of the population smoked cigarettes; today, it’s about 18 percent. That’s good progress. On the other hand, there are still more than 40 million Americans who have a dependence on tobacco. And, each day, an estimated 3,200 people under age 18 smoke their first cigarette and another 2,100 young occasional smokers become daily smokers. So truly, the most single important thing a person can do positively to affect their overall and lung health is to stop smoking right away. Or better yet — don’t start.