Cancer is a generic term for a large group of diseases that can affect any part of the body. One defining feature of cancer is the rapid creation of abnormal cells that grow beyond their usual boundaries, and which can then invade adjoining parts of the body and spread to other organs. This process is referred to as metastasis. Metastases are the major cause of death from cancer. Key facts:
Cancers figure among the leading causes of death worldwide, accounting for 8.2 million deaths in 2012 . Lung, liver, stomach, colorectal and breast cancers cause the most cancer deaths each year. The most frequent types of cancer differ between men and women. About 30% of cancer deaths are due to the five leading behavioral and dietary risks: high body mass index, low fruit and vegetable intake, lack of physical activity, tobacco use, alcohol use. Tobacco use is the most important risk factor for cancer causing over 20% of global cancer deaths and about 70% of global lung cancer deaths. It is expected that annual cancer cases will rise from 14 million in 2012 to 22 within the next two decades. The problem:
Cancer is a leading cause of death worldwide, accounting for 8.2 million deaths in 2012. The main types of cancer are: lung (1.59 million deaths)
liver (745 000 deaths)
stomach (723 000 deaths)
colorectal (694 000 deaths)
breast (521 000 deaths)
oesophageal cancer (400 000 deaths) .
Lung cancer (also known as carcinoma of the lung) is a disease characterized by uncontrolled cell growth in tissues of the lung. This growth can spread beyond the lung in a process called metastasis into nearby tissue or other parts of the body. Most cancers that start in lung, known as primary lung cancers. Smoking, particularly of cigarettes, is by far the main contributor to lung cancer. Pollution increasing lung cancer in Indian women.
Tobacco use is the single most important risk factor for cancer causing about 22% of global cancer deaths and...
Please join StudyMode to read the full document