The American Cancer Society is the nationwide, community-based, voluntary health organization dedicated to eliminating cancer as a major health problem by preventing cancer, saving lives, and diminishing suffering from cancer, through research, education, advocacy, and service. Nearly half of all cancer deaths could be avoided if we did what we know works - live healthier lifestyles, quit smoking, and get our recommended cancer screenings. The American Cancer Society is here to help you take steps every day to stay well. We have the resources, information, and support you need to stay motivated to eat right and get active, quit smoking or help a loved one kick the habit, and understand what cancer screenings you need.