There are a variety of ways that cellular DNA can become damaged and defective. For example, environmental factors such as exposure to tobacco smoke can initiate a chain of events that results in cellular DNA defects that lead to cancer. Alternatively, defective DNA can be inherited from your parents. As cancer cells divide and replicate themselves, they often form into a clump of cancer cells known as a tumor.
Tumors cause many of the symptoms of cancer by pressuring, crushing and destroying surrounding non-cancerous cells and tissues. Tumors come in two forms; benign and malignant. Benign tumors are not cancerous, thus they do not grow and spread to the extent of cancerous tumors.
Benign tumors are usually not life threatening. Malignant tumors, on the other hand, grow and spread to other areas of the body. The process whereby cancer cells travel from the initial tumor site to other parts of the body is known as metastasis. For those seeking addiction treatment for themselves or a loved one, the MentalHelp.
Individuals with the combination of asbestos exposure and smoking have the highest risk of cancer. Thackery states that smoking increases risk of lung cancer by ten times more than for the non-smokers also exposed to asbestos. An accident occurring in September 11, attacked on the World Trade Centre WTC in New York, which makes people at the site are at a high risk of developing a disease related to asbestos.
Since the North Tower of the WTC was constructed with asbestos, when the building was devastated, hundreds of tons of asbestos were delivered into the atmosphere. Today, since government regulations and public pay more attention to the health hazards of asbestos exposure, the use of it in the United States has decreased rapidly. Therefore, workplace practices containing asbestos are highly conducted by industry and government to minimize worker exposure.
In this way, the rate of cancer causes by asbestos exposure can reduce to a low level. Except for the environmental factors, economy also plays an important role. There are two primary economic causes making cancer a globe health problem, the poverty and the economic burden. Poverty is considered as a promoting risk issue in the development of cancer. According to Chan and Amano , there are 7. It is believed that if measures were not taken, the number of deaths will expand rapidly though this number in prosperous countries is still increasing.
Since poverty is the crucial reason why cancer patients cannot be diagnosed timely, it also leads patients to give up hospitalization. The significant majority of this is in the developing countries and women there lack awareness of recognizing the cancer and treating it.
Nevertheless, in some wealthy countries such as the United States and the United Kingdom, women are benefiting greatly from their health care system. However, Silberner announces women with breast cancer in Uganda do not come to hospitals until cancer cells spread throughout the whole body because they hold the mistaken view that their breast will be lopped off and their husbands will leave them.
Apart from poverty, another economic factor makes the cancer become a global health issue is the large economic burden. The economic burden occurs ubiquitously in the world. In lower income countries, people are concerned about the guarantee of their daily life, whereas in higher income countries, workers are confronting the enormous economic stress such as employment and unemployment. The massive economic pressure causes depression, which likewise brings about smoking and drinking.
Owing to the stress experience every day, people are constantly going through a fast tempo of life resulting in lacking physiologic exercises. Moreover, irregular life style can lead to eating disorder, such as excessive eating of junk food.
Additionally, economic status can also have an effect on men. Do you feel shocked, numb, angry,or afraid? Do you feel like life is unfair? My father cancer diagnosis shook the whole family. He was strong,healthy and brave person in my family. The high incidence of colorectal cancer CRC , one of the most common malignant tumors, ranks third among all cancer types . A biomarker was defined as a characteristic that Prostate cancer is a form of cancer that develops in the prostate, a gland in the male reproductive system.
Most prostate cancers are slow growing; however, there are cases of aggressive prostate cancers. Prostate cancer may cause pain, difficulty in urinating, problems during sexual A boil also known as a furuncle is a deep infection of the hair follicle or oil gland. When a boil starts to break out the skin becomes red and quiet tender. After a few days the boil becomes a white this is puss collecting under the skin, the boil becomes even more painful. The DNA directs the cells to divide and stops the division when not required.
In cancerous cells the controlling factor is not present, probably due to mutant genes. Due to absence of controlling factor, the mitosis continues uncontrolled and forms cancer. It is believed that these cells carry certain cancer causing genes, called oncogens.
These oncogenes remain inactive. Certain conditions initiate these genes to multiply and destroy the normal controlling factor of the cells. The role of virus is strongly suspected now. Some retrovirus, which causes tumor may be involved in this process.
It is known that these viruses have RNA as genetic material. This DNA acts as viral oncogene. The viral oncogenes may interact with the oncogenes of the cell, called proto-oncogenes and take control of the cell function.
Cancer is curable, if it is detected at the early stages. The patient enjoys full life without recurrence of the disease. Strong chemicals are used to kill the cancerous cells and isolate these cells from other organs.
Sometimes all these three methods are applied to cure cancer. This dreaded disease can be cured fully, if it is detected at the preliminary stage. So social consciousness should be developed for early detection.
Onkos meaning cancer were initially identified as genes carried by viruses that cause transformation of their target cells.
A major class of Oncogenes, the oncogenes present in acute transforming retroviruses, has homologues in animal genomes; these cellular counterparts are called Proto- oncogenes. Proto-oncogenes participate in normal cell function, and in certain cases, a mutation or aberrant activation of a Proto- oncogenes causes tumour formation.
While a diagnosis of cancer may still leave patients feeling helpless and out of control, in many cases today there is cause for hope rather than hopelessness. Our goal in this section is to educate you on the basics of cancer and cancer treatment.
CANCER Topic: Cancer INTRODUCTION Attention Getter: More than 1/2 million people are expected to die of cancer this year. That's more than 1, a day. An average of 1/2 of men and 1/3 of women will develop cancer. Purpose: To inform my audience about cancer.
Cancer essays There are so many diseases found in the world. Some of them can be cured and some others had been killing people for years. For example, cancer is the name for a group of diseases in which the body's cells are changed in appearance and function. Introduction of Cancer Essay Sample. Cancer has become a challenge that faces the entire world population. According to the World Health Organization (), cancer is the main leading cause of death in economically developed and developing countries respectively.
Male Breast Cancer Essay. Breast Cancer, Causes, Risk Factors and Prevention By Istvan S Diego Introduction Notwithstanding that male breast cancer is a rare phenomenon, it is still possible. Such cases account for only 1% of all breast cancer. Introduction and Conclusion to Cancer Essay Introduction to cancer CANCER, a 6 letter word that makes our world upside down, but do you know, what cancer is? Yes, it is a rapid cause of the decline of human race, but can you discern the mechanics of cancer?