Second-hand smoke (SHS) may seem harmless, but new research shows it takes a heavy toll on children. Even non-smokers are affected when exposed at home, in public, or indoors with smokers. Around half of children worldwide continue to face this risk, with the highest burden in low- and middle-income countries.
Exposure to SHS is linked to respiratory infections, asthma, ear problems, stunted growth, and reduced lung function. Infants under one year are particularly vulnerable, and studies even suggest SHS can cause changes at the genetic level, increasing long-term disease risk.
Experts point out that home exposure remains the biggest challenge, as public bans don’t cover private spaces. Crowded living conditions, poor ventilation, and limited awareness make children even more vulnerable.
What can help:
- Make indoor spaces completely smoke-free, including homes and cars.
- Educate caregivers about SHS dangers.
- Encourage smokers to go outside, away from children and windows.
- Pregnant women should avoid SHS to protect babies before birth.
Second-hand smoke is more than an annoyance—it’s a serious threat to children’s health. Small changes at home and stronger public policies could prevent illness, disability, and even death for millions of kids worldwide.