How cancer or tumor cells originate?

Answer 1

Cancer cells are formed through a complex process known as carcinogenesis, which involves the transformation of normal cells into malignant cells. This transformation occurs due to genetic mutations and alterations in the DNA of the cells. The steps leading to cancer cell formation can be summarized as follows:

Initiation: The process of carcinogenesis often begins with an initiating event, which causes DNA damage or mutations in the genetic material of a normal cell. This can be triggered by various factors, including exposure to carcinogens (cancer-causing substances) such as tobacco smoke, radiation, certain chemicals, and certain viruses.

Promotion: Following initiation, promotion occurs, where the damaged cell undergoes further changes that promote abnormal cell growth and division. These changes can be influenced by factors like chronic inflammation and certain hormones.

Progression: If the initiated and promoted cell continues to divide and accumulate more genetic mutations, it can progress to a pre-cancerous state. During progression, the cell acquires additional mutations that provide a growth advantage, allowing it to proliferate rapidly and evade the body's normal control mechanisms.

Metastasis: In some cases, cancer cells may further evolve and gain the ability to invade surrounding tissues and enter the bloodstream or lymphatic system. This enables cancer cells to spread to distant parts of the body, forming new tumors in a process called metastasis.

It's important to note that not all cells with DNA mutations become cancerous. The body has sophisticated mechanisms, including the immune system, that can detect and eliminate abnormal cells. In many cases, the immune system successfully recognizes and destroys pre-cancerous or early cancer cells before they develop into full-blown cancer.

However, certain factors can increase the likelihood of cancer development. These include:

Genetic Predisposition: Inherited genetic mutations can increase the risk of developing certain types of cancer.

Age: Cancer becomes more common as individuals age because accumulated genetic damage over time can lead to cancerous changes.

Lifestyle Factors: Factors like tobacco use, unhealthy diet, lack of physical activity, exposure to certain chemicals, and excessive alcohol consumption can contribute to DNA damage and increase cancer risk.

Environmental Exposures: Prolonged exposure to environmental factors like radiation, pollution, and certain industrial chemicals can increase the risk of cancer.

It's crucial to continue research efforts to better understand the molecular mechanisms of cancer formation and to develop effective prevention strategies and targeted therapies. Early detection, healthy lifestyle choices, and regular medical check-ups remain essential for reducing the risk of cancer and improving overall health outcomes.

Answer 2

There are a gene code present in our body known as proonco genes which are responsible for cancer when these genes change into oncogen then they cause a rapid cell division which is uncontrollable and lead to the formation of a cell mass which is called cancer tumor.

Answer 3

after studying this disease for many years and having listened too many well respected Doctors the only I answer I can come up with is that Cancer maybe a disease that was accidentally brought here from visitors from another planet.

That may sound really out there but consider what happened to the Central American Indians when Europeans came to America and released small pox. Cancer cells when not in a host body are most likely living as some other form and when it invades the host this form mutates into a cancer cell. Cancer cells don't die a natural death which is why I believe its some sort of an extremal life form.

For a more down to Earth answer Cancer maybe something that our bodies produce as part of our natural defense system in response to a stimuli of something that the body detects as harmful or unwanted. In other words it maybe part of our defense system that has gone haywire and instead of attacking the unwanted stimuli its starts attacking all other parts of the body

which may explain why smokers are more prone to cancer than non smokers

I am sorry I don't have a definitive answer as I wish I did

Answer 4

cancer cells are formed when the normal oxygeneration of a healthy cell.

Answer 5

cancer cells and tumors origanate by cell mutation when the cell does not copy the DNA correctly and the cell forms rapidly forming a tumor