Which of the following risk factors for coronary heart disease enables you to subtract one risk factor from the total amount of positive risk factors?
a. body mass index < 30 kg/m2
b. high serum HDL cholesterol > 60 mg/dL (1.6 mmol/L)
c. fasting blood glucose of < 110 mg/dL (6.1 mmol/L)
d. a former cigarette smoker who stopped more than six months ago
Answer: b. high serum HDL cholesterol > 60 mg/dL (1.6 mmol/L)