Antipsychotics' Hidden Risk: Weight Gain and Long-Term Health Dangers

Antipsychotic medications play a vital role in treating conditions like schizophrenia, psychosis and bipolar disorder. However, many of these drugs are linked to weight gain, which can lead to further health problems. Doctors stress that the mental health benefits of these treatments far outweigh the risks of side effects. Antipsychotics can alter hormones that regulate appetite, often increasing cravings and leading to weight gain. This effect varies between medications. Some, such as aripiprazole, asenapine, brexpiprazole, cariprazine, haloperidol, lumateperone, lurasidone, and ziprasidone, carry a lower risk. Others, particularly olanzapine and clozapine, pose a much higher risk—especially for children and adolescents.

Estimates suggest that between 5,000 and 10,000 young people under 18 in Germany currently take antipsychotics. Olanzapine is the more common choice for conditions like schizophrenia and bipolar disorder, used in roughly 20-30% of paediatric cases. Clozapine, reserved for treatment-resistant schizophrenia, is prescribed far less often, affecting around 1-5% of this group. Studies, including the EUFEST trial and German KiGGS cohort, show that long-term use in young patients can increase the risk of severe weight gain, insulin resistance, diabetes, and cardiovascular issues by up to 50%.

Managing weight while on antipsychotics is possible with lifestyle changes. Dietary advice, structured exercise plans, setting realistic goals, and social support can all help reduce weight gain. Patients are encouraged to discuss concerns with their doctor before starting or continuing treatment. Weight gain from antipsychotics can contribute to serious conditions like heart disease, high blood pressure, and cholesterol problems. Despite these risks, medical professionals emphasise that the benefits of these medications for mental health remain far greater. Regular discussions with a doctor can help balance treatment needs with managing side effects.