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People with schizophrenia are more likely to develop type 2 diabetes than the general population. Although an increased risk of diabetes has been attributed to environmental determinants such as diet, lifestyle and antipsychotic drugs, the association between these two disorders was noticed well before the advent of current lifestyles and pharmacological interventions, raising the possibility of a shared genetic basis. Schizophrenia and type 2 diabetes are common diseases with a complex mode of inheritance which includes both genetic factors and environmental determinants. As susceptibility genes for both type 2 diabetes and schizophrenia are beginning to be identified there is increasing interest in the possibility of shared susceptibility loci between the two conditions. This article reviews the genetic basis to schizophrenia and type 2 diabetes and discusses the potential for shared loci between both conditions.

Original publication

DOI

10.1177/0269881105058380

Type

Journal article

Journal

J Psychopharmacol

Publication Date

11/2005

Volume

19

Pages

47 - 55

Keywords

Antipsychotic Agents, Comorbidity, Diabetes Mellitus, Type 2, Gene Frequency, Genetic Linkage, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Inheritance Patterns, Receptor, Serotonin, 5-HT2A, Receptor, Serotonin, 5-HT2C, Receptors, Serotonin, Risk Factors, Schizophrenia, Weight Gain