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 BMI below 30 kg/m2 simply falls beneath the obesity threshold and is not classified as a negative risk factor in ACSM guidelines; it does not confer a subtraction from the positive risk factor total.

High-density lipoprotein (HDL) cholesterol has a well-established cardioprotective mechanism by facilitating reverse cholesterol transport, and ACSM guidelines explicitly categorize HDL above 60 mg/dL as a negative risk factor for coronary heart disease. Because of this protective effect, clinicians subtract one from the total positive risk factor count when this criterion is met, potentially lowering the individual's overall risk classification.

A fasting blood glucose below 110 mg/dL is within a normal range and means the prediabetes/diabetes positive risk factor criterion is not triggered, but it is not itself a defined negative risk factor that enables subtraction.

Quitting smoking for more than six months eliminates the cigarette smoking positive risk factor from the count entirely; it does not function as a separate negative risk factor that subtracts an additional point from the total.