Which of the following indicates a potential risk factor for metabolic syndrome regarding HDL levels in men?

A HDL cholesterol level of less than 40 mg/dl is considered a potential risk factor for metabolic syndrome in men. Low levels of HDL cholesterol (often referred to as "good" cholesterol) are associated with an increased risk of cardiovascular disease since HDL plays a crucial role in transporting cholesterol away from the arteries and back to the liver, where it can be processed and eliminated. This protective effect is particularly important for men, as they tend to have higher rates of cardiovascular issues related to metabolic syndrome.

An HDL level below this threshold indicates that there may not be adequate cholesterol transport occurring, potentially leading to an accumulation of cholesterol in the arterial walls and increasing the risk of developing atherosclerosis, heart disease, and other related health issues. Understanding these levels helps healthcare providers evaluate an individual’s risk for metabolic syndrome and implement lifestyle changes or interventions necessary for better health outcomes.