A 34-year-old man diagnosed with paranoid schizophrenia has been taking olanzapine $15 \mathrm{mg}$ orally daily for 6 months. His psychotic symptoms have lessened and his attention to personal hygiene has improved. However, since he began this treatment regimen, he has gained 65 pounds, his blood sugar has increased, and he has an elevated lipid profile. He is concerned about these adverse effects, yet he is functioning at a high level.
- What should the nurse instruct the patient to do?