High levels of cholesterol can lead to a number of serious health complications if left uncontrolled. Some potential future complications of uncontrolled cholesterol include:

1. Heart disease: High levels of cholesterol can lead to the buildup of plaque in the arteries, which can eventually lead to heart disease, heart attacks, and strokes.

2. Peripheral artery disease: This occurs when the buildup of plaque in the arteries limits blood flow to the arms and legs, causing pain and increasing the risk of infections and tissue damage.

3. Atherosclerosis: This is a hardening and narrowing of the arteries due to the buildup of cholesterol and other substances, which can lead to a range of serious health problems, including heart attack, stroke, and peripheral artery disease.

4. High blood pressure: High levels of cholesterol can also contribute to high blood pressure, which can increase the risk of heart disease, stroke, and other health problems.

5. Diabetes: High levels of cholesterol can increase the risk of developing diabetes, which in turn can lead to a range of other health complications, including nerve damage, kidney damage, and vision problems.

6. Liver disease: High levels of cholesterol can also increase the risk of developing liver disease, such as nonalcoholic fatty liver disease (NAFLD), which can lead to liver damage, cirrhosis, and liver failure.

It is important to manage cholesterol levels through a combination of lifestyle changes and, in some cases, medication, to reduce the risk of these and other potential complications.