Can ex-smokers cut down their lung cancer risk? Oncologist shares 5 tips to know

By Admin

24 Sep, 2025

Quitting smoking is one of the hardest decisions many individuals make, and it’s also one of the most important for long-term health. But a common question arises: does giving up cigarettes automatically eliminate the risk of lung cancer?

In an interview with HT Lifestyle, Dr. Mandeep Singh Malhotra, director of surgical oncology at the CK Birla Hospital, Delhi, explained, “For ex-smokers, the journey doesn’t end with giving up cigarettes. The harmful effects of tobacco may linger for years, which is why additional preventive measures are essential.”

From adopting a healthy lifestyle to focusing on an antioxidant-rich diet, here are five important tips for ex-smokers to reduce their risk of lung cancer.

1. Commit to complete abstinence

For many ex-smokers, the temptation of “just one cigarette” can undo much of the progress made. Even occasional relapses may reignite the body’s dependency on nicotine. True prevention is possible only through complete abstinence. Ex-smokers must also avoid secondhand smoke by steering clear of environments where others are smoking.

2. Adopt a healthy lifestyle

A well-rounded routine that includes daily physical exercise, yoga, and breathing practices can significantly improve lung capacity and overall respiratory health. Regular activity also strengthens immunity, helping the body repair the damage caused by years of smoking.

3. Focus on an antioxidant-rich diet

Food plays a vital role in recovery. Green leafy vegetables, seasonal fruits, nuts, and other antioxidant-rich foods help neutralize harmful free radicals and reduce lung tissue inflammation. Over time, such a diet can partially reverse oxidative damage caused by smoking.

4. Go for regular health check-ups

Early detection saves lives. Ex-smokers should make annual health check-ups a priority, and imaging tests may be recommended based on risk factors. While low-dose CT scans are not yet widely adopted for mass screening, they remain promising tools in detecting lung cancer early. Personalized screening is key.

5. Stay ahead with emerging screening methods

Medical science is advancing quickly. One of the most promising techniques is liquid biopsy a blood test that can detect cancer-related genetic changes. For high-risk groups, including long-term smokers who have quit, liquid biopsy could provide a safe and non-invasive way to detect lung cancer in its earliest stages.

Final note to readers

This article is for informational purposes only and should not be taken as medical advice. Always consult a qualified healthcare professional for personalized guidance on lung health and cancer prevention.