Smoking has many disadvantages such as increasing the risk of lung cancer, pregnancy problems, and heart and blood vessel issues. Lung cancer patients who smoke are 15 to 30 times more likely to develop lung cancer or die from it. Smoking also endangers those around the smoker through secondhand smoke. To quit smoking, one can change their diet, keep their hands busy, exercise, make non-smoking friends, and make a list of reasons to quit. In Malaysia, half of men smoke, translating to 7 million male smokers, while 1 in 5 teens also smoke. The risks of smoking were better understood by smokers who expressed a desire to quit.