A case study: LUNG CANCER:
Definition: Uncontrolled growth of tumours in the lungs
Causes: There is a obvious link between grass and lung pubic louse. Tobacco smoke contains many carcinogens such as benzene
Effect: As the tumour grows, the air sacs in the lungs are destroyed and lively becomes difficult. The lungs collapse and abscess and the patient may begin coughing up blood
Statistical Information:
- Mass production of cigarettes began in 1880 - free cigarettes were precondition to WWI soldiers
- In the 1930s there was a sudden lung crabby person epidemic
- The first epidemiological studies which showed a kindred between smoke and lung cancer were in the 1950s, but they did not have decisive results - they just showed a reduced live expectancy
- In 1964 the Surgeons oecumenical Advisory Committee concluded that cigarette fume was causally responsible for lung cancer.
- In the 1970s, as the numbers of female smokers began to increase, lung cancer became the number one cause of cancer death.
- Studies have shown a correlation between the number of cigarettes smoked each day and the risk of contracting lung cancer at an earlier stage
* Also, a gradual decrease in the numbers of people smoking in the past 20 years has been mirrored by a decrease in sufferers of lung cancer
This was genarally well written tho I think you should have said something about the relationship between secondhand smoke and lung cancer as this is too a major cause. Also watch your senctence construction, because I got the inpresion in the 5th line that the patients had abscess and both these and their lungs where collapsing. But other than that, a very well researched and well presented essay.
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