This infographic explains the dangers of smoking. A single cigarette contains over 7,000 chemicals, dozens of which can cause cancer. Smoking makes you addicted, damages your lungs, reduces oxygen in your blood, and can lead to diseases like lung cancer, heart attacks, and strokes. Other effects include yellow teeth, bad breath, dull skin, faster aging, reduced fertility, harming your family with secondhand smoke, draining your money, lowering productivity, and even shortening your life.