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  • Cancer A-Z

    Whether you or someone you love has cancer, knowing what to expect can help you cope. From basic information about cancer and its causes to in-depth information on specific cancer types – including risk factors, early detection, diagnosis, and treatment options – you’ll find it here.

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  • Stay Healthy

    You can help reduce your risk of cancer by making healthy choices like eating right, staying active and not smoking. It’s also important to follow recommended screening guidelines, which can help detect certain cancers early.

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    Whether you want to learn about treatment options, get advice on coping with side effects, or have questions about health insurance, we’re here to help. We can even find you a free ride to treatment or a free place to stay when treatment is far from home.

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    cover of 2021 Cancer Facts and Figures on wide blue background Facts & Figures 2021 Reports Another Record-Breaking 1-Year Drop in Cancer Deaths

    Our team of expert journalists brings you all angles of the cancer story – from breaking news and survivor stories to in-depth insights into cutting-edge research.

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    Top Story

    cover of 2021 Cancer Facts and Figures on wide blue background Facts & Figures 2021 Reports Another Record-Breaking 1-Year Drop in Cancer Deaths
  • Our Research

    What does it take to outsmart cancer? Research. We’ve invested more than $4.9 billion in cancer research since 1946, all to find more – and better – treatments, uncover factors that may cause cancer, and improve cancer patients’ quality of life.

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  • About Us

    At the American Cancer Society, we’re on a mission to free the world from cancer. Until we do, we’ll be funding and conducting research, sharing expert information, supporting patients, and spreading the word about prevention. All so you can live longer — and better.

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  • Treatment & Support
  • Treatments and Side Effects
  • Managing Cancer-related Side Effects

Second Cancers

This information focuses on second cancers in adults. For information about second cancers after treatment of childhood cancers, see Children Diagnosed With Cancer: Late Effects of Cancer Treatment

  • What Are Second Cancers?
  • Second Cancers Related to Treatment
  • Second Cancer Risks Related to Lifestyle and Environment
  • Second Cancer Risks Related to Family History and Genetics
  • Lowering the Risk of Getting a Second Cancer

More In Treatment & Support

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