Being exposed to secondhand smoke is a known health hazard. Many people lay down no-smoking rules in their homes and cars, but too many people still have not adopted this personal policy.
Smoking is a known health hazard for pregnancies. But being exposed to smoke in utero may follow a baby girl into her own pregnancy when she grows up.
Teens have been smoking less in recent years, which is great. But overall, the use of smokeless tobacco has remained steady for over a decade.
Secondhand smoke exposure during childhood may change cholesterol levels in a way that could increase the risk for heart disease later in life. That risk may not be the same for both genders.
The health community has been striving to lower smoking rates for decades. The good news is that prevention programs have worked, some better than others.