ICSE Class 9 Answered

Secondhand smoke is the combination of smoke from the burning end of a cigarette and the smoke breathed out by smokers.

• Secondhand smoke causes nearly 34,000 premature deaths from heart disease each year in the United States among nonsmokers.
• Nonsmokers who are exposed to secondhand smoke at home or at work increase their risk of developing heart disease by 25–30%.
• Secondhand smoke exposure causes more than 8,000 deaths from stroke annually.

• Breathing secondhand smoke may interferes with the normal functioning of the heart, blood, and vascular systems and result in increasing the risk of having a heart attack.