Too much cholesterol primarily affects which body system?

The correct response highlights that excessive cholesterol primarily impacts the cardiovascular system. Cholesterol is a waxy substance found in the body's cells and in the bloodstream. When there are elevated levels of cholesterol, particularly low-density lipoprotein (LDL) cholesterol, it can lead to the accumulation of plaque in the arteries. This plaque buildup narrows the arteries and restricts blood flow, significantly increasing the risk of heart disease, heart attacks, and strokes.

The cardiovascular system, which includes the heart and blood vessels, is directly affected by the levels of cholesterol in the body, making it essential to manage cholesterol levels for heart health. Understanding this relationship between cholesterol and the cardiovascular system underscores the importance of maintaining healthy cholesterol levels for overall well-being.

Other systems listed, such as the digestive, respiratory, and nervous systems, do not have the same direct and relevant relationship with cholesterol levels. The digestive system processes and absorbs cholesterol from foods, but it is the cardiovascular system that experiences the most significant consequences from elevated cholesterol levels.