Although cholesterol in and of itself is not bad, it requires a balance of high-density lipoprotein, referred to as "good" cholesterol, and low-density lipoprotein, known as "bad" cholesterol. Too much or too little of either type can put you at risk for coronary heart disease, heart attack or stroke, according to the American Heart Association. Although a sedentary lifestyle, poor diet and a family history may be the main cause of increased cholesterol levels, several health conditions can also be the cause.
Hypothyroidism
High cholesterol is a well-known effect of hyopthroidism -- a health condition in which the thyroid gland fails to make enough thyroid hormone to regulate the body's metabolism, according to Alan Rubin in the book "Thyroid for Dummies." The increase in cholesterol occurs due to the decline of cholesterol metabolization, which reabsorbs while the liver continues to produce an excess of cholesterol, Rubin says. Many cases of undiagnosed hypothroidism will result in high cholesterol levels. The author recommends being tested for the condition if your cholesterol is above 200.
Type 2 Diabetes
The Cleveland Clinic warns that type 2 diabetics may experience an increase in cholesterol levels. Although you may have stabilized blood sugar control, if you suffer from this form of diabetes, you will tend to have an increase in triglycerides and low-density lipoprotein, as well as a decrease in high-density lipoprotein. This dually increases your chances of developing arterial plaque, leading to arterial hardening, stroke, heart attack and coronary disease.
Acquired Hyperlipidemia
Acquired hyperlipidemia is a common genetic disorder I, which increased blood fats and cholesterol lead to early instances of heart attacks, according to MedlinePlus. Although diabetes, alcoholism and hypothyroidism can significantly worsen this disorder, an unhealthy lifestyle can quickly fast track you to coronary artery disease. If you have this condition, you will develop high cholesterol or triglyceride levels during your teenage years and they will remain high throughout your life. It is particularly important to eat a low-fat fat diet with a decreased amount of meat consumption.
References
- American Heart Association: About Cholesterol
- "Thyroid for Dummies"; Alan Rubin; 2006
- Cleveland Clinic: Diseases Linked with High Cholesterol
- MedlinePlus: Familial Combined Hyperlipidemia
