Heterozygous Familial Hypercholesterolemia: Causes, Symptoms, and Treatment
Medically reviewed by Harsha Moole, MD, Internal Medicine. Last reviewed: October 2, 2026.
What kind of doctor treats Heterozygous Familial Hypercholesterolemia?
A primary care doctor usually manages the condition with a specialist: a lipidologist, who focuses on cholesterol problems, or a cardiologist, who focuses on the heart. Many people see a specialist once or a few times for a treatment plan.
What it is
Heterozygous familial hypercholesterolemia is an inherited condition that causes very high LDL cholesterol, often called "bad" cholesterol, from birth. "Heterozygous" means a person inherited one copy of the changed gene from one parent. Without treatment, cholesterol builds up in the arteries, raising the chance of heart disease at a younger age than usual.
Symptoms
Most people feel completely fine for years, so it often goes undiagnosed. Some develop cholesterol deposits called xanthomas over the tendons of the hands, feet, or Achilles tendon, or a ring around the colored part of the eye called a corneal arcus. Serious problems like chest pain or heart attack come from cholesterol buildup in the arteries.
Causes and who gets it
The condition is caused by a mutation in a gene that helps remove LDL cholesterol from the blood, most often the LDLR gene. A parent has about a one in two chance of passing it to each child. It affects roughly one in every 250 to 300 people worldwide.
How doctors diagnose it
Doctors start with a blood test measuring cholesterol. Very high LDL raises suspicion, especially in a young person or when several family members are affected. Early heart disease in a close relative is another clue. Genetic testing can confirm the diagnosis.
Treatment
Treatment focuses on lowering LDL cholesterol to protect the arteries over a lifetime. Doctors recommend heart-healthy eating, exercise, not smoking, and a healthy weight. Most people also need medicines; statins are usually the first choice, and others can be added if needed. Treatment usually continues for life.
When to see a doctor
Anyone with a family history of very high cholesterol or early heart disease should ask about cholesterol testing. Seek care right away for chest pain, shortness of breath, or other heart attack signs. If a close relative is diagnosed, other family members should be offered testing.
How a direct primary care or concierge doctor fits in
A direct primary care doctor charges a flat monthly fee instead of billing insurance; a concierge doctor usually charges more and often works alongside insurance. Either can order cholesterol tests, prescribe common medicines, and see patients more often, referring to a specialist when cholesterol stays very high.
Common questions
Can heterozygous familial hypercholesterolemia be cured?
There is no cure, because the condition comes from a changed gene. Treatment can usually lower cholesterol a lot and lower the risk of heart problems over time, though results differ from person to person.
Is it the same as ordinary high cholesterol?
No. Ordinary high cholesterol often comes from diet, weight, and lifestyle. This condition is inherited, present from birth, causes much higher cholesterol levels, and needs lifelong treatment.
Should my children be tested if I have it?
Children of an affected parent have a one in two chance of inheriting it. Many experts recommend testing children early, since early treatment protects the arteries longer. A doctor can help decide the right timing.
Can diet and exercise alone control it?
Healthy habits help, but most people also need medicine to reach safe cholesterol levels. The body makes cholesterol based on the changed gene, so lifestyle changes alone are usually not enough.
Sources
- MedlinePlus Genetics - Familial hypercholesterolemia
- NIH Genetic and Rare Diseases Information Center - Homozygous familial hypercholesterolemia
Medical Disclaimer
This content is for general educational and informational purposes only and is not medical advice. It is not a substitute for professional medical advice, diagnosis, or treatment, and reading it does not create a doctor-patient relationship. Always seek the advice of your physician or another qualified health provider with any questions about a medical condition, and never disregard or delay seeking professional advice because of something you read here. If you think you may have a medical emergency, call 911 (or your local emergency number) immediately.
