Mayo Clinic

Regular exposure to secondhand smoke can threaten the health of nonsmokers, the Mayo Clinic argues in the following viewpoint. It maintains that secondhand smoke irritates the lungs and other tissues and is linked to a variety of diseases including asthma, bronchitis, and lung cancer. Children, the clinic insists, are particularly vulnerable to health threats from secondhand smoke. Low birth weight, sudden infant death syndrome, ear infections, and juvenile asthma are just some of the health problems secondhand smoke causes in children. The Mayo Clinic is a not-for-profit health center based in Rochester, Minnesota.

As you read, consider the following questions:

1. According to the Mayo Clinic, what is sidestream smoke?
2. What is the concentration of cotinine in the blood of twenty-one- to thirty-six-week-old fetuses whose mothers smoke, according to the clinic?
3. How did0regular exposure...