9. Avoid Smoking and Limit Alcohol

Smoking is a leading cause of cancer and heart disease—quitting brings immediate and long-term benefits. Avoid secondhand smoke when possible. Alcohol should be consumed in moderation—no more than one drink per day for women. Excess alcohol raises the risk of liver issues, cancers, and mental health challenges. If quitting is hard, seek professional help—it’s worth it. Your lungs, liver, and brain will thank you. Clean habits lead to cleaner health outcomes.