How can risperidone cause weight gain?

See below: For some people, Risperidone can make them feel more hungry, so they eat more and gain weight. Risperidone can also affect how your body uses sugar, and this makes it tend to gain more weight.

Risperidone: Metabolic changes, as seen by dose-dependent elevations of cholesterol, triglyceride, LDL and VLDL concentrations within 6 weeks of risperidone therapy, are other atypical features seen in our patient. The combination of increasing weight along with abdominal adiposity and dyslipidaemic changes may herald the onset of metabolic syndrome.