Scientist discovered that the causes of
schizophrenia affected by the genes as well as environment.
Genes:
research found that schizophrenia
within the family. Schizophrenia occurs in 1% of the general population, but it
occurs in 10 % of people who have a first-degree relative with the disorder,
such as a parent, brother, or sister. People who have second-degree relatives such
as aunts, uncles, grandparents, or cousin with the disease also can have a
chance to develop schizophrenia. The risk of this illness is highest for an
identical twin with schizophrenia. He or she has a 40 to 65 % chance of
developing the disorder.
Environment: Scientists believes that the
interactions between people and the environment are necessary for schizophrenia
to develop. Many environmental factors may lead to this disorder, such as
exposure to viruses or malnutrition before birth, problems during birth, and
exposure to virus during infancy.
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