Unifactorial and multifactorial diseases
- Unifactorial: Some diseases have only one cause and may effect a certain organ or tissue (eg malaria)
- Multifactorial: Some diseases have several causes, usually depending on lifestyle (eg lung cancer)
Epidemiological studies
Epidemiological studies look at the incidence and pattern of a disease in order to find ways of prevention and cure. They look to see if a disease is ENDEMIC (naturally occuring in an area), EPEDEMIC (a disease in a small, certain area) or PANDEMIC (a disease spread across a large area, such as worldwide).
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