A 58-year-old woman with no cardiovascular history attends for a periodic health review. She is a non-smoker with blood pressure 128/78 mm Hg. Fasting lipids show LDL cholesterol 4.0 mmol/L and HDL 1.2 mmol/L. Her 10-year Framingham risk is calculated at 22 percent. What is the most appropriate management regarding lipid-lowering therapy?