1. Avoid Smoking
Don’t smoke. Cigarette smoking causes about 80% to 90% of lung cancer deaths in the United States. The most important thing you can do to prevent lung cancer is to not start smoking, or to quit if you smoke.

2. Avoid secondhand smoke
Smoke from other people’s cigarettes, cigars, or pipes is called secondhand smoke. Make your home and car smoke-free.ity and pancreas. Even if you don't use tobacco, exposure to secondhand smoke might increase your risk of lung cancer.

3. Avoid taking tabacco
Avoiding tobacco — or deciding to stop using it — is an important part of cancer prevention. If you need help quitting tobacco, ask your doctor about stop-smoking products and other strategies for quitting.

4. Eat a healthy diet
Although making healthy selections at the grocery stores and at mealtime can't guarantee cancer prevention, it might reduce your risk. Healthy cooked meal at home also helps to reduce the risk.

5. Eat plenty of fruits and vegetables. Base your diet on fruits, vegetables and other foods from plant sources. Fruits like Dates, lemon, pineapple, apple, watermelon, cucumber etc

6. Maintain a healthy weight
Eat lighter and leaner by choosing fewer high-calorie foods, including refined sugars and fat from animal sources.

7. Avoid alcohol or more intake of alcohol
If you choose to drink alcohol, do so only in moderation The risk of various types of cancer — including cancer of the breast, colon, lung, kidney and liver — increases with the amount of alcohol you drink and the length of time you've been drinking regularly.

8. Get regular medical care
Regular self-exams and screenings for various types of cancers — such as cancer of the skin, colon, cervix and breast — can increase your chances of discovering cancer early, when treatment is most likely to be successful. Ask your doctor about the best cancer screening schedule for you.

9. Avoid sex risk
Reduce your risk of HIV infection by using recommended protection. This avoids the risk of having lung cancer.