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1. cancer.ca › en › cancer-informationHow cancer starts, grows and spreads | Canadian Cancer Society

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   Knowing how a cancer spreads and where a cancer may spread helps doctors predict how the cancer will grow. This also helps them plan treatment and give appropriate supportive care. Cancer can spread anywhere in the body, but it’s most likely to spread to lymph nodes, bones, the brain, the liver or the lungs.

2. www.mayoclinic.org › diseases-conditions › cancerCancer - Symptoms and causes - Mayo Clinic

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   • Overview
   • Symptoms
   • Causes
   • Risk Factors
   • Complications
   • Prevention

   Cancer refers to any one of a large number of diseases characterized by the development of abnormal cells that divide uncontrollably and have the ability to infiltrate and destroy normal body tissue. Cancer often has the ability to spread throughout your body. Cancer is the second-leading cause of death in the world. But survival rates are improvin...

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   Signs and symptoms caused by cancer will vary depending on what part of the body is affected. Some general signs and symptoms associated with, but not specific to, cancer, include: 1. Fatigue 2. Lump or area of thickening that can be felt under the skin 3. Weight changes, including unintended loss or gain 4. Skin changes, such as yellowing, darkeni...

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   Cancer is caused by changes (mutations) to the DNA within cells. The DNA inside a cell is packaged into a large number of individual genes, each of which contains a set of instructions telling the cell what functions to perform, as well as how to grow and divide. Errors in the instructions can cause the cell to stop its normal function and may allo...

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   While doctors have an idea of what may increase your risk of cancer, the majority of cancers occur in people who don't have any known risk factors. Factors known to increase your risk of cancer include:

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   Cancer and its treatment can cause several complications, including: 1. Pain.Pain can be caused by cancer or by cancer treatment, though not all cancer is painful. Medications and other approaches can effectively treat cancer-related pain. 2. Fatigue.Fatigue in people with cancer has many causes, but it can often be managed. Fatigue associated with...

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   Doctors have identified several ways to reduce your risk of cancer, such as: 1. Stop smoking.If you smoke, quit. If you don't smoke, don't start. Smoking is linked to several types of cancer — not just lung cancer. Stopping now will reduce your risk of cancer in the future. 2. Avoid excessive sun exposure.Harmful ultraviolet (UV) rays from the sun ...

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4. www.medicalnewstoday.com › articles › how-doesHow does cancer kill you? - Medical News Today

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   Sep 25, 2023 · Cancer kills by growing into key organs, nerves, or blood vessels and interfering with and impairing their function. It can begin in almost any human cell. Usually, new cells form...

   • Author: Jennifer Huizen

5. my.clevelandclinic.org › health › diseasesWhat Is Cancer? Symptoms, Causes & Types - Cleveland Clinic

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   Diseases & Conditions / Cancer. Having cancer is a life-changing event. Knowing what to expect — from diagnosis to recovery — can empower you and help you take control of your health. This is a general overview of what cancer is, what causes it, how healthcare providers treat it and how you can take care of yourself throughout your journey.

6. www.cancer.org › cancer › diagnosis-stagingSigns and Symptoms of Cancer | Do I Have Cancer?

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   How does cancer cause signs and symptoms? A cancer can grow into, or begin to push on nearby organs, blood vessels, and nerves. This pressure causes some of the signs and symptoms of cancer. A cancer may also cause symptoms like fever, extreme tiredness (fatigue), or weight loss.

7. www.healthline.com › health › cancerCancer: Types, Causes, Treatment, and Prevention - Healthline

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   Jan 17, 2023 · The main cause of cancer is mutations, or changes to the DNA in your cells. Genetic mutations can be inherited. They can also occur after birth as a result of environmental forces. These...

8. People also ask

   How does cancer affect a person's health?

   • As the cancer progresses and spreads to multiple parts of the body, the symptoms tend to increase, as does the likelihood of death. Cancer kills by growing into key organs, nerves, or blood vessels and interfering with and impairing their function.

   How does cancer kill you? - Medical News Today

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   Can cancer cause death?

   • If cancer becomes severe enough that it impairs or prevents vital organ function, it can result in death. The list below outlines some examples of how different types of cancer ultimately cause death: Gastrointestinal cancers: These cause death due to malnutrition related to the blockage of the digestive system or an infection.

   How does cancer kill you? - Medical News Today

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   How does cancer affect a cell?

   • Each one has a life cycle determined by the type of cell. As cells become damaged or die off, new cells take their place. Cancer disrupts this process and causes cells to grow abnormally. It’s caused by changes or mutations in the cell’s DNA.

   Cancer: Types, Causes, Treatment, and Prevention - Healthline

   www.healthline.com/health/cancer

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   What happens if cancer is left untreated?

   • Cancerous tumors tend to spread and invade surrounding tissues, impacting their function or health. With early treatment, the early stages of cancer usually do not cause severe symptoms or lead to death. However, untreated later stage cancer tends to cause severe symptoms and has a higher likelihood of causing death.

   How does cancer kill you? - Medical News Today

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   Do tumors cause health problems?

   • Tumors can cause health problems, depending on where they grow in the body. Not all tumors are cancerous. Benign tumors are noncancerous and do not spread to nearby tissues. But sometimes, tumors can grow large and cause problems when they press against neighboring organs and tissue.

   Cancer: Types, Causes, Treatment, and Prevention - Healthline

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9. cancer.ca › en › cancer-informationPrognosis and survival - Canadian Cancer Society

   cancer.ca › en › cancer-information

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   A prognosis is your doctor’s best estimate of how cancer will affect you and how it will respond to treatment. Prognostic and predictive factors are used to help develop a treatment plan and predict the outcome.