Topics about human health issues are popular at A-level. Geographers have an important role to play in researching the increasing portion of wealth that is being spent on healthcare. The result of this spending is an increase in the average lifespan in many parts of the world.
Major diseases are an important part of health studies. There are a number of diseases that are passed on by human–human contact. Tuberculosis (TB) is one of the most worrying. We thought at one point that it had been conquered, but there is evidence that it is increasing again, this time in a form that is drug resistant. TB spreads through the air and affects people who live in cramped housing conditions, particularly if their immune system is compromised, e.g. by poor diet, or other infections.
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