Which of the following is a primary risk factor in dyslipidemias?

In the context of dyslipidemias, which refer to abnormal levels of lipids in the blood, a primary risk factor is low physical activity. Engaging in regular physical activity has a well-established role in managing lipid levels, including increasing high-density lipoprotein (HDL) cholesterol, which is often referred to as "good" cholesterol. Conversely, a sedentary lifestyle can lead to an increase in low-density lipoprotein (LDL) cholesterol and triglycerides, both of which are associated with a higher risk of cardiovascular disease.

Regular exercise helps to improve metabolic health, supports weight management, and influences the functioning of metabolic pathways that promote healthy lipid profiles. Therefore, low physical activity is a significant risk factor for dyslipidemias as it directly impacts lipid metabolism and balances lipid levels in the body. This makes it the correct answer in the context of identifying a primary risk factor for dyslipidemias.