Schizophrenia is a chronic brain disorder that affects about one percent of the population. Although the specific cause of the illness is unknown it is believed to be as a result of several factors including: genetics, biology, environment and lifestyle. A combination of genes is believed to be associated with the development of schizophrenia, which may indicate the link between the increased occurrences in families. Studies have shown that while 1 in 100 people may be effected by a schizophrenia diagnosis in the general public this number drops to 1 in 7 in non-identical twins and a 1 in 2 chance for identical twins, where one sibling has previously been diagnosed.
Low birth weight, premature birth and
asphyxia during birth are more likely to have been experienced by