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Appropriate intervention strategies for weight gain induced by olanzapine: a randomized controlled study
W Milano1, F Grillo, A Del Mastro
1Mental Health Unit, District 44-ASL, Naples, Italy.
Advances in Therapy
|May 29, 2007
Summary
Diet and exercise significantly reduce antipsychotic weight gain. Combining olanzapine with lifestyle changes led to less weight gain than olanzapine alone, improving treatment adherence for schizophrenia and bipolar disorder patients.
Area of Science:
- Psychiatry
- Pharmacology
- Metabolic Health
Background:
- Antipsychotic-induced weight gain is a major cause of non-compliance in psychiatric patients.
- Weight gain can lead to recurrent symptoms and poorer clinical outcomes.
- Adherence to pharmacologic treatment is crucial for managing schizophrenia and bipolar disorder.
Purpose of the Study:
- To evaluate the impact of diet modifications and moderate physical activity on olanzapine-induced weight gain.
- To compare weight changes in patients receiving olanzapine with lifestyle interventions versus those receiving olanzapine monotherapy.
Main Methods:
- Two groups of patients (schizophrenia/bipolar disorder) were studied for 8 weeks.
- Group A (n=18) received olanzapine, a 500 kcal/d diet reduction, and 30-min exercise 3x/week.
- Group B (n=10) received olanzapine monotherapy.
Main Results:
- Group A gained an average of 1.47 kg, while Group B gained 3.5 kg (p<.005).
- Lifestyle interventions significantly reduced weight gain compared to olanzapine alone.
- This demonstrates the effectiveness of diet and exercise in mitigating atypical antipsychotic weight gain.
Conclusions:
- Moderate physical activity and diet therapy are effective in reducing weight gain associated with atypical antipsychotics like olanzapine.
- Monitoring patient weight and BMI is essential during early antipsychotic treatment to prevent significant weight gain and treatment discontinuation.
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