The most uncomfortable statistic in schizophrenia care: people with schizophrenia die on average 15–20 years earlier than the general population. Suicide accounts for some of that gap, but the largest contributor is cardiovascular disease — driven heavily by metabolic side effects of antipsychotic medication and lifestyle factors that compound it.
This is fixable. The medications work. The lifestyle changes work. The monitoring is straightforward. What's missing in most cases is consistent application of what we already know.
A cluster of conditions that together raise the risk of heart disease, stroke, and diabetes: abdominal obesity, high blood pressure, high blood sugar, abnormal cholesterol/triglycerides. Three of five criteria = diagnosis.
The five criteria
Metabolic syndrome is diagnosed when 3 or more of these are present:
- Waist circumference: >102 cm (40 in) men, >88 cm (35 in) women
- Triglycerides: ≥150 mg/dL
- HDL cholesterol: <40 mg/dL men, <50 mg/dL women
- Blood pressure: ≥130/85 mmHg or on treatment
- Fasting glucose: ≥100 mg/dL or on treatment
Why people on antipsychotics are at higher risk
Several mechanisms compound:
- Direct medication effects on appetite, food preferences, and metabolism
- Insulin resistance that some antipsychotics cause independent of weight
- Sedation reducing physical activity
- Negative symptoms reducing motivation for self-care
- Higher rates of smoking in this population
- Less access to consistent primary medical care
Which antipsychotics carry the highest risk
- Highest: Clozapine, olanzapine
- High: Quetiapine, risperidone
- Moderate: Paliperidone, brexpiprazole, asenapine
- Lower: Aripiprazole, lurasidone, ziprasidone, cariprazine
What monitoring should look like
The American Diabetes Association / American Psychiatric Association consensus guideline recommends, for any patient on a second-generation antipsychotic:
- At baseline: personal/family history, weight (BMI), waist circumference, blood pressure, fasting plasma glucose (or HbA1c), fasting lipid panel
- 4 weeks: weight
- 8 weeks: weight
- 12 weeks: weight, blood pressure, fasting glucose, fasting lipid panel
- Quarterly: weight
- Annually: personal/family history, weight, waist circumference, blood pressure, fasting glucose, fasting lipids
In practice, this monitoring is patchy. Ask for it. If your prescriber doesn't routinely order metabolic labs, request them. They're standard of care.
Interventions that work
Weight management
- Metformin (the strongest evidence)
- Lifestyle programs (5-10% weight loss is the goal)
- GLP-1 agonists (newer, expensive but powerful)
- Switching to a lower-risk antipsychotic if symptoms allow
Blood sugar / diabetes
- Metformin (works for both prevention and treatment)
- Lifestyle changes (especially eliminating sugary drinks)
- If diabetes develops, full diabetes management — usually with primary care or endocrinology
Cholesterol / triglycerides
- Statins for elevated LDL or established cardiovascular risk
- Diet (Mediterranean-style eating has the best evidence)
- Omega-3s for high triglycerides
- Reducing sugar and refined carbohydrates
Blood pressure
- Standard BP medications (ACE inhibitors, ARBs, etc.)
- Sodium reduction
- Weight loss
- Exercise
Smoking cessation
Smoking rates in schizophrenia are 2–3× higher than the general population, and quitting has perhaps the largest single impact on long-term mortality. Note: stopping smoking can affect levels of some antipsychotics (particularly clozapine) — let your prescriber know if you stop.
The honest tradeoff
Antipsychotic medications save lives by preventing relapses, hospitalisations, and suicide. They also create cardiovascular risks. The right answer for most patients is not to choose between them but to treat the psychiatric illness fully and treat the metabolic side effects fully — at the same time. The patients with the best long-term outcomes have a psychiatrist coordinating with a primary care doctor and active management of both.
What you can do
- Have a primary care doctor in addition to your psychiatrist
- Track weight monthly
- Get baseline labs and follow-up labs at the recommended intervals
- Ask for metformin proactively if you're starting a high-risk antipsychotic
- If you smoke, get support to quit
- Move daily — even walking
- Eliminate liquid calories
This article is for educational purposes only and is not medical advice. Always consult your prescribing clinician for personalised guidance.