Which of the following is NOT a physical problem caused by long-term stress?

Long-term stress can have various detrimental effects on the body, many of which are well-documented in medical literature. Options A, B, and D all reflect physical problems associated with chronic stress. For instance, long-term stress is known to raise blood pressure due to the persistent release of stress hormones, which can lead to increased heart strain and higher blood pressure levels. Moreover, stress can suppress the immune system, making the body more susceptible to illness and infections because of the changes in immune responses. Similarly, chronic stress is linked to an increased risk of heart attack, largely due to factors such as high blood pressure, unhealthy lifestyle choices made in response to stress (like poor diet and lack of exercise), and the direct effects of stress hormones on the heart's function.

In contrast, lowering cholesterol is not typically associated with long-term stress. In fact, chronic stress tends to increase cholesterol levels rather than decrease them. Stress can lead to unhealthy habits, such as poor diet and lack of exercise, which may contribute to rising cholesterol levels rather than a decrease. Therefore, identifying lowered cholesterol as a result of chronic stress makes it the correct choice for the question, as it does not align with the known physical problems caused by long-term stress.