Occasional exposure to secondhand smoke is generally harmless, but long-term exposure to secondhand smoke may cause respiratory diseases, central nervous system damage, cardiovascular damage, and decreased immunity.
1. Respiratory diseases: children are most likely to damage the respiratory tract after passive inhalation of secondhand smoke, which may manifest as dry throat, cough, sputum, etc. Pneumonia may occur in case of combined infection.
2. Central nervous system damage: after children inhale second-hand smoke, the harmful substances in the smoke will cause damage to the central nervous system, causing dizziness and memory loss.
3. Cardiovascular damage: Harmful components of secondhand smoke enter the bloodstream and cause changes in blood pressure, heart rate, and vascular function, damaging the cardiovascular system and inducing cardiovascular disease.
4. Decreased immunity: children in the environment of second-hand smoke for a long time will also cause damage to the body’s immune system, resulting in decreased immunity in children.
Long-term exposure to second-hand smoke will also have other harmful effects on children, parents should allow children to avoid exposure to second-hand smoke, so as not to affect growth and development.