A case study: LUNG CANCER:
Definition: Uncontrolled growth of tumours in the lungs
Causes: There is a obvious link between smoking and lung cancer. Tobacco smoke contains many carcinogens such as benzene
Effect: As the tumour grows, the air sacs in the lungs are destroyed and breathing 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 given to WWI soldiers
- In the 1930s there was a sudden lung cancer epidemic
- The first epidemiological studies which sh…
