Diabetes

Individuals with schizophrenia are at greater risk than the general population of developing diabetes, or glucose intolerance.^{[Correll, 2007; Subramaniam et al., 2003]} The association between schizophrenia and diabetes is thought to be partially explained by genetic factors.^{[Bushe & Holt, 2004]} However, it is also the case that patients with schizophrenia may display poor health behaviours, including having a poor diet and smoking, which are factors that may increase the risk of diabetes.^{[Bushe & Holt, 2004]} The strength of the association is such that patients with schizophrenia should be monitored for the risk factors of diabetes, allowing for early detection, and education of patients about the importance of a healthy lifestyle.^{[Bushe & Holt, 2004]}

References:
Bushe C, Holt R. Prevalence of diabetes and impaired glucose tolerance in patients with schizophrenia. Br J Psychiatry 2004; 184 (Suppl 47): s67–s71.

Correll CU. Balancing efficacy and safety in treatment with antipsychotics. CNS Spectr 2007; 12 (10 Suppl 17): 12–20, 35.

Subramaniam M, Chong S, Pek E. Diabetes mellitus and impaired glucose tolerance in patients with schizophrenia. Can J Psychiatry 2003; 48 (5): 345–347.