How Does Cancer Start?

Save
  • Cancer begins when an abnormal cell grows and does not stop dividing. Cancerous cells typically divide more quickly than normal, healthy cells. Once cancerous cells begin, they rapidly invade surrounding tissue.

  • The human body is composed of trillions of cells, which constantly grow, divide and die. For the most part, cells are healthy and perform vital functions. Sometimes, however, cells do not form or behave properly. In a normal cell, this causes self-.

  • Cancerous cells differ because they continue to reproduce in spite of abnormalities or faulty information. Cancer cells also do not obey the laws of contact inhibition, which means that cancerous cells propagate when they touch another cell. (Normal cells stop dividing when this happens.) This proliferation of cancerous cells enables the disease to quickly form tumors and spread throughout the body.

  • Without contact inhibition to stop their progress, cancer cells are free to grow. Nutrition is required for growing, so the cells feed off the body's systems, robbing it of much needed nutrients. When cancer cells invade surrounding tissue and organs, they can inhibit or completely stop normal processes. Because they do not accomplish any useful function, cancer cells can be thought of as parasitic.

  • Angiogenesis growth factor is secreted by cancer cells. This growth factor causes new blood vessels to form, surrounding the cancerous growth. These vessels provide the cancer with a blood supply. The blood provides nutrition for the cancer to grow and sustain itself. Angiogenesis is a normal process when used for reproduction and tissue repair. In the case of cancer, it becomes a nightmare as tumors grow and spread around the body.

  • There are certain characteristics that all cancer cells share. They continue to divide and grow continuously, do not die or adhere to each other and they do not specialize. If you were to look at cancer cells under a microscope, you would see hundreds of cells that are exact copies of each other. There is no differentiation. Because cancer cells do not adhere to each other, it is easy for cells to break away and move to another part of the body. When the cells reach a new destination, they begin dividing and invading again. This process is called metastasis.

  • The causes of cancer are contributed to smoking, genetic mutation, immunity disorders such as HIV, and exposure to chemicals and radiation. This is why it is so important to lead a lifestyle that includes a healthy diet and plenty of exercise. Because people who are stressed are more likely to get sick due to lowered immunity, get eight hours' sleep every night. Do not smoke, limit your exposure to sunlight and always have protected sex. In cases where cancer is genetic, the same principles apply. People who are genetically inclined to have a disease do not necessarily get that disease. Leading a healthy life goes a long way in protecting yourself from cancer.

Promoted By Zergnet

Resources

You May Also Like

  • Beginning Stages of Gum Cancer

    Gum cancer is a type of oral cancer that affects millions of people each year. The possibility of getting gum cancer is...

  • What Does Breast Cancer Look Like?

    Breast cancer refers to cancer that originates in the ducts or glands of the breast. Breast cancer in its earliest stages is...

  • What Does Skin Cancer Look Like?

    Skin cancer is the most common form of human cancer, but is treatable when caught early. It's important to perform a self-examination...

  • How Fast Does Ovarian Cancer Spread?

    According to the Ovarian Cancer National Alliance, ovarian cancer is high on the list of cancer deaths among American women. Its high...

  • Where Does Ovarian Cancer Metastasize To?

    Ovarian cancer symptoms are vague and may be overlooked, making the tumor difficult to diagnose in the early, more treatable stages. By...

  • Where Does Colon Cancer Spread?

    Cancer can affect any part of the body, but it's especially common in the colon or large intestine. Colon cancer is caused...

  • How Do People Get Cancer?

    People get cancer when something in the nucleus of a cell causes the cell to divide rapidly at an abnormal rate, leading...

  • How Does Cancer Form in the Body?

    Cancer forms in the body when an abnormal growth of cells is carried throughout the body by the lymphatic system. Find out...

  • How Does Lung Cancer Develop?

    Lung cancer develops when smoking, air pollutants and free radical formation damages sensitive lung tissue, causing the cellular DNA to restructure and...

  • How Does Cancer Work in the Body?

    Cancer cells can start in one part of the body and they can grow uncontrolled throughout the body, but they may also...

  • What Age to Start Having Mammograms

    Conflicting schools of thought on when to begin getting annual mammograms can leave women confused and frustrated. Some doctors and organizations recommend...

Related Searches

Check It Out

This Is the Beauty Routine of a Yelp Sales Manager

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!