Using tobacco products significantly increases your risk of developing cancer. Smoking has been linked to various types of cancer — including cancer of the lung, bladder, cervix and kidney. Chewing tobacco has been linked to cancer of the oral cavity and pancreas. Even if you don't use tobacco, exposure to secondhand smoke may increase your risk of lung cancer. Quitting smoking and avoiding secondhand smoke is one of the most important health decisions you can make. It's also an important part of cancer prevention. Thinking of quitting? Call your local health unit for free workshops that may offer access to free Nicotine Replacement Therapy (NRT) or click for information about support programs in your area and/or smoking cessation support from the Smokers’ Helpline.