Wednesday, July 4, 2018



Cancer is the generic term used to describe a group of disorders caused by an uncontrolled multiplication of cells, which usually resulting in the destruction of neighbouring tissues. Gradually, these tissues and organs stop functioning and death may occur.

The reasons for cells to start multiplying is unknown in most cases. They may have some inbuilt abnormality or may be affected by external influences.
Cancer – Why Some Get It and Some Don’t

The Immune System
Your immune system is your first line of defense against everything that could harm your body. When it is compromised due to illness, lifestyle choices, or medications, it cannot protect you from the initial stages of cancer development.
You are effectively left defenseless. Transplanted organs (and the immune suppressant drugs prescribed) and chronic infections can also damage the immune system and lead to damaged cells, uncontrolled cell production, and cancer masses.
Keeping your immune system in fighting condition is critical to prevention of diseases such as cancer, slowing down the effects of aging, and keeping you strong and healthy every day of your life.

Your Age
Cancer can happen to any person, of any age, both genders, and every race. Some cancers strike specific demographics but more than 75% of cancer diagnosis occurs in persons over the age of 55. That means that your risk increases as you get older.
Lifetime risk (the chance that you will get cancer in your life) of cancer for men is almost 50% and for women is more than 35%. It is crucial to strengthen your body and acquire good lifestyle habits as early as possible to minimize your individual risk.

Lifestyle Choices
Maintaining a healthy lifestyle is not easy for many. Cutting out tobacco use (due to the carcinogenic chemicals), limiting alcohol, controlling body weight, and altering eating habits to remove over-processed, GMO, and chemical-laden foods are essential steps to prevent and even treat cancer.
No matter how much smoking, drinking, and junk food may seem “enjoyable” – they will shorten your lifespan over time. They weaken your immune system, cause body-wide inflammation, and leave you susceptible to disease.
Genetics and Family History
If one of your family members has been diagnosed with cancer, there is a risk that you may also develop cancer. Know your family medical history and avoid behaviors that lead to illness and disease.
However, genetics is not the cause for the majority of cancer cases. Experts estimate that it represents only about 5% of annual cancer diagnoses.

What are the common terms associated?

Since cancer is a group of disorders, there are some terms commonly used in the description of the disease.

Oncology – 'onco' meaning 'cancer', oncology is the study of various types of cancers.
Tumour – a lump resulting from an uncontrolled growth of cells which may be malignant or benign.
Malignant – a growth of cells that destroys the surrounding tissue and spreads to other parts of the body.
Benign – a growth of cells that is not cancerous.
Both benign and malignant growths are unwanted multiplications of cells, but whereas a benign growth does not generally leave the place of its origin, a malignant growth usually destroys not only the tissue of its origin but also the surrounding ones. This is why cancers are caused due to malignant growths, which spread to all areas of the body.
Carcinoma – a term synonymously used with cancer. But carcinomas are specifically malignant tumours mostly forming on the outlines (epithelium) of the affected organ. It is the most frequently occurring form of cancer.
Sarcoma – another form of cancer where specifically the connective tissue (that which supports the various parts of the body), is affected. It is a malignant form and cancers of the blood, lymphatic system, bone and the like, fall under this category.

What are the symptoms?

Cancers appear in many different ways. Most often they are noticed as a lump or growth in some part of the body. This is the case with tumours that form on the outlines of organs. When the cancerous growth is not physically identifiable, there may be other revealing symptoms depending on the form of cancer and the affected organ.

Cancer in the brain may have symptoms like headache, vomiting, difficulty in walking, paralysis and memory problems. Tumours of the intestine can present problems in bowel movements and pain in the stomach. Lung cancers may be manifested by difficulty in breathing and cough. Cancers of the breast are detected as a painless lump. There may also be some deformity of one or both breasts in some cases.

Some malignant tumours are manifested by abnormal bleeding from the affected organ. For example, cancer of the intestine may result in loss of blood in stools. Similarly, lung cancer may be detected when the patient passes blood in the sputum. Pain, as popularly believed, is not a common symptom of cancer. It only occurs in some cases where a nerve is pressed due to rapid enlargement of a tumour.

Other symptoms that may be common to all forms of cancer are a lack of appetite, unexplained loss of weight, general feeling of weakness and fatigue and increased proneness to infections.

How is the diagnosis made?

In case blood is passed in stools or cough, the patient should see a doctor. For confirmation, a biopsy of the affected organ is done. In this procedure, a small part of the tissue is taken for laboratory testing to detect the presence of cancerous cells.In case of cancer of the lungs, liver, stomach or intestine, an X-ray or ultrasound of the area may be taken. CT scans of the organs may also be done for diagnosis. The diagnosis is always made keeping in mind the patient's previous medical history.

What is the treatment?

Treatment is most effective if the cancer is detected early. Chemotherapy is the most common method of treatment for cancer that has spread to other parts of the body. In this procedure, the malignant cells are destroyed with the help of powerful chemicals like methotrexate and vincristine which are given intra-venously i.e. directly injected into the veins. This procedure requires a hospital stay for the duration of therapy. It is also associated with various side effects like loss of hair, nausea, vomiting, loss of appetite and weakness for some days.For a tumour that has not spread, radiotherapy or radiation, or surgery may be done. In the former, the cells are destroyed with the help of strong radioactive waves. The exact position of the tumour is marked and the area is exposed to radiation under strictly controlled conditions. This treatment is given in breaks and in pre-determined doses. Tumours that develop in organs under hormonal control like the breast, thyroid or prostate, may also be treated with endocrine therapy. In this treatment, either the source of the hormone is removed or anti-hormone drugs are given. This treatment scores over chemotherapy because it usually has less severe side effects. But the doctor decides the best course of treatment depending on the diagnosis of the form of cancer.

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