A client's total cholesterol level is 344 mg/dl (8.6 mmol/l), low-density lipoprotein cholesterol (ldl-c) level is 164 mg/dl (4.25 mmol/l), and high-density lipoprotein cholesterol (hdl-c) level is 30 mg/dl (1.2 mmol/l). based on analysis of the data, how should the nurse direct client teaching?