Most people associate lung cancer with smoking. But you may be surprised to learn that there are 16 different cancers that can be cause by smoking. There are over 7000 chemicals in tobacco smoke and 69 of these are known to cause cancer-called carcinogens. Every time you take a puff of a cigarette, the chemicals in the smoke enter your bloodstream and through your blood, spread to other parts of your body. This is how smoking can cause cancer in many different parts of your body. Your health will start to benefit from quitting within 20 minutes of your last cigarette. The health benefits continue over time. Reducing your risk of smoking-related cancers can begin today with your decision to quit.Quitting smoking is one of the best things you can do for yourself. You’ll feel better, you’ll look better.Only 20 minutes after your last smoke, your heart rate slows and your blood pressure drops slightly. After about two weeks of staying smoke-free, some big changes will start to kick in. You lung function will increase, and blood circulation will improve.That means you’ll have more energy.Not only will you feel better, you will look better too.