People with schizophrenia have nearly a 100% higher risk of developing cardiovascular disease
compared to the general population, and heart disease is the leading cause of death in this group. [1, 2]
Prevalence of Risk Factors vs. Heart Disease
- Metabolic Syndrome: Affects about 60% of people with schizophrenia (compared to much lower rates in the general public), driven by factors like weight gain, high blood sugar, and abnormal cholesterol. [1, 2]
- Manifest Cardiac Disease: While risk factors are very high, active structural or diagnosed heart disease (such as heart failure or coronary artery disease) at initial baseline screening is often around 1%, though it accumulates and escalates significantly with age. [1]
- Sudden Cardiac Death: The risk of sudden cardiac death is 3 to 4 times higher in individuals with schizophrenia than in the general population. [1, 2]
- Life Expectancy: Cardiovascular complications contribute heavily to a shortened life expectancy, cutting average life span by 10 to 25 years. [1]
Key Contributing Factors
- Antipsychotic Medications: Many second-generation antipsychotics (such as clozapine and olanzapine) cause weight gain, insulin resistance, and lipid changes, and some can affect heart rhythms (prolonging the QTc interval). [1, 2, 3]
- Lifestyle and Habits: Smoking rates are roughly three times higher in people with schizophrenia than in the general population. Poor diet, lower physical activity, and higher rates of stress also play a major role. [1, 2]
- Biological Links: Chronic systemic inflammation, shared genetic risk markers, and dysregulation of the autonomic nervous system and stress hormones (like cortisol) directly affect heart structure and blood vessels. [1, 2, 3]
- Healthcare Gaps: People with schizophrenia are less likely to receive routine preventive cardiovascular screenings, regular checkups, or timely cardiac interventions. [1, 2]
