American Cancer Society

Learn About Cancer

Get in-depth information to help you understand cancer.

Our comprehensive guides can help you learn about diagnosis, treatment, and risk factors for many specific types of cancer.

Select a cancer type

Stay Healthy

Help lower your cancer risk by making healthy choices

Weight, diet, exercise, and other factors can all affect your cancer risk, while screening can help find cancer early.

Learn what you can do to stay well

Find Support and Treatment

Cancer can have physical and emotional side effects

Get tips to live well during and after cancer treatment, and find American Cancer Society programs that can help.

Find information and services

Explore Research

We’re working to find cancer’s causes and cures

Research is at the heart of the American Cancer Society’s mission and we’re finding answers that save lives.

Learn about our research accomplishments

Get Involved

Make a difference in the fight against cancer

Help finish the fight against cancer by volunteering, donating, or participating in a local event.

Find an opportunity to get involved

Our Mission

Together with our supporters, the American Cancer Society saves lives and creates a world with less cancer and more birthdays by helping people stay well, helping people get well, by finding cures, and by fighting back. As a global grassroots force of more than 3 million volunteers, we are working every day in every community to eliminate cancer as a major health problem. To learn more or to get help, visit cancer.org or call 1-800-227-2345.

Activity

American Cancer Society was mentioned in an article
On Mar 01

Prostate Cancer Controversy: Should You Get Screened?

You might have seen the headlines: metastatic, or late-stage prostate cancer diagnoses have increased by 72 percent over the past decade. But before you panic, let’s take a closer look at the controversy surrounding this study. Researchers from Northwestern University reviewed more than 700,00
Read More
American Cancer Society was mentioned in an article
On Mar 01

Prostate Cancer Controversy: Should You Get Screened?

You might have seen the headlines: metastatic, or late-stage prostate cancer diagnoses have increased by 72 percent over the past decade. But before you panic, let’s take a closer look at the controversy surrounding this study. Researchers from Northwestern University reviewed more than 700,00
Read More
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27
American Cancer Society has posted a video
On Nov 27