High cholesterol is a condition in which the body has an abnormally high level of cholesterol in the blood. It can be caused by lifestyle factors such as an unhealthy diet or lack of physical activity, or it can be genetic. Symptoms of high cholesterol may include fatigue, difficulty concentrating, and shortness of breath. Diagnosis of high cholesterol is typically done through a blood test. Treatment for high cholesterol includes lifestyle changes such as eating a healthy diet and exercising, as well as medications such as statins. In some cases, surgery may be necessary to reduce cholesterol levels.

A brain stroke occurs when there is an interruption in the flow of blood to the brain, typically caused by a blockage or a rupture of a blood vessel. Symptoms of a brain stroke include sudden numbness or weakness of the face, arm, or leg, especially on one side of the body, confusion, trouble speaking or understanding speech, difficulty seeing in one or both eyes, and difficulty walking or maintaining balance. Diagnosis of a brain stroke can be done through a physical exam and imaging tests such as an MRI or CT scan. Treatment for a brain stroke typically involves medications such as clot-busting drugs and anticoagulants to help break up and prevent blood clots, as well as rehabilitation therapy to help with physical and cognitive effects.