Everyone has the right to attain the highest level of health possible, and should have access to health and medical services.

Preventing illness can involve trying to change the way people live their lives, such as their diet and access to clean water.

Preventative health care is particularly important in countries of the South, where there are often not enough doctors and medicines are very expensive.

Vaccination programmes are important in eradicating, or preventing the spread of, infectious diseases. Educating people also plays a big role in improving peoples' health.