Which of the following is NOT a characteristic of atherosclerosis?

Atherosclerosis is a condition characterized by the buildup of plaques in the walls of arteries, primarily composed of cholesterol, fatty substances, and other cellular debris. This condition leads to the narrowing of arteries, which can impede blood flow, resulting in various cardiovascular issues.

The deposition of cholesterol plays a critical role in the development of atherosclerosis, as these cholesterol-rich plaques contribute to the narrowing of the arteries. Consequently, the blockage of blood flow is a direct result of these plaques, leading to conditions that can strain the heart and vascular system.

Additionally, atherosclerosis significantly increases the risk of heart attacks and strokes, as the restricted blood flow to the heart can lead to ischemia and potentially catastrophic events.

In contrast, an increase in metabolic rate is not a direct characteristic of atherosclerosis. While other factors such as physical activity levels and overall health can impact metabolic rate, the condition itself does not inherently cause a rise in metabolic activity. Instead, it primarily affects the cardiovascular system without directly influencing metabolic processes.