Much of cancer is caused by smoking. Not only lung cancer but 12 different types have been implicated by smoking, IIRC. In the US warning labels have been on cigarettes for more than 50 years, yet people still start smoking.
In NYC, they implemented WHO's MPOWER program with great success. This includes raising the cost of tobacco through tax, banning smoking in public places, very, very strong anti-smoking ads and more. Yet, the Federal tax on tobacco is only about $1.