what i would do to prevent lung cancer.

The most common thing that causes Lung cancer as we all know is Smoking cigarettes. If i could, and if i ruled the world i would stop cigarettes from existing, shops won't be able to sell it, there will be no such thing as smoking. If people smoke, i will make them pay $800 for one cigarette so less people could afford it and sell it to rich people for a billion dollars for just one. Hardly anyone will get lung cancer this way considering it would either not exist or it will be not affordable! However, if someone does chooses to smoke, they would get broke and not be able to buy anymore and would be bankrupt/poor.