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Cause of Cancer - Discover What is the Major Cause of Cancer

April 19, 2022
Est. Reading: 4 minutes

The Biggest Cause of Cancer

There is no one definitive answer to what the biggest cause of cancer is. However, there are several factors that can contribute to an individual's risk of developing cancer. These include genetics, lifestyle choices, and environmental factors like exposure to certain chemicals or radiation. Cancer is a complex disease, and it is often difficult to determine a single cause. However, by understanding the various risk factors, we can be better informed about how to prevent cancer and what steps to take if we are diagnosed.


dna damage



It is estimated that 5-10% of cancers are hereditary, meaning they are caused by an altered gene that is passed down from a parent to a child. Hereditary cancer syndromes are often associated with specific types of cancer, such as breast or ovarian cancer. If you have a family history of cancer, it is important to speak with your doctor about your risks and what steps you can take to prevent the disease.

Lifestyle choices:

Certain lifestyle choices can increase your risk of developing cancer. These include smoking, drinking alcohol, having a poor diet, and being exposed to UV radiation. Taking steps to improve your lifestyle can help reduce your risk of cancer.

Environmental factors:

Certain environmental factors can increase your risk of developing cancer. These include exposure to certain chemicals or radiation, as well as living in an area with high levels of air pollution. If you are concerned about your risk of cancer, it is important to speak with your doctor about ways to reduce your exposure to these toxins.

While it’s certainly true that global lifestyle-related diseases like cancer are on the rise, the biggest risk factor for cancer is age. The simple fact is that more people are living long enough to develop cancer because of our success in tackling infectious diseases and other historical causes of death, such as malnutrition. It’s perfectly normal for DNA damage in our cells to build up as we age, and such damage can lead to cancer developing. However, carcinogens – which are substances that can damage our DNA and increase the risk of cancer – can also speed up this process.


A carcinogen can come from a variety of sources, including tobacco smoke, UV radiation from the sun, certain chemicals used in industry, and even some foods. While it’s impossible to completely avoid all carcinogens, there are some simple steps we can take to reduce our exposure. Tobacco smoke is one of the most well-known carcinogens and is responsible for around 22% of cancer deaths worldwide. If you smoke, quitting is the single best thing you can do for your health. There are plenty of resources available to help you quit, so there’s no excuse not to try.

UV radiation from the sun is another well-known carcinogen. We all need some sun exposure for vitamin D, but it’s important to limit our time in the sun and to wear sunscreen when we are outdoors. Some chemicals used in industry, such as asbestos and benzene, are also carcinogenic. If you work with such chemicals, it’s important to take proper safety precautions to avoid exposure. There are also some food-related carcinogens to be aware of. For example, acrylamide is a carcinogen that’s produced when starchy foods are cooked at high temperatures, such as in frying.



Cancer Diagnosis

If you have any symptoms that could be associated with cancer, it’s important to see a doctor as soon as possible. Cancer is often diagnosed through a combination of physical exams, imaging tests (such as X-rays), and biopsies. A biopsy is the removal of a small sample of tissue for testing and is often the only way to definitively diagnose cancer.

Once cancer is diagnosed, further tests may be done to determine the stage of the disease. This is important because it helps guide treatment decisions. The most common staging system for cancer is the TNM system, which stands for tumor size, node involvement, and metastasis.


cancer diagnosis


Viruses and Bacteria

It’s also worth noting that viruses and bacteria can cause cancer. The human papillomavirus (HPV) is a sexually transmitted virus that can cause cervical cancer in women. The hepatitis B virus (HBV) can cause liver cancer. The Epstein-Barr virus has been linked to Hodgkin lymphoma. And the human immunodeficiency virus (HIV) can lead to Kaposi’s sarcoma, a type of cancer that affects the skin and lymph nodes. While these are all important considerations, it’s important to remember that the vast majority of cancers are not caused by viruses or bacteria.

In conclusion, there is no one definitive answer to what the most significant cause of cancer is. However, there are several factors that can contribute to an individual's risk of developing cancer. These include genetics, lifestyle choices, and environmental factors. Learn more about the cause of cancer here.

We hope this information has been helpful. If you have any further questions, please don't hesitate to reach out. Thank you for your time!



What is the Biggest Cause of Cancer?

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