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What is alpha-1 antitrypsin deficiency?

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Also called AAT deficiency, alpha-1 antitrypsin deficiency is a genetic disease, which means it's passed down from your parents. It can cause serious lung disease that makes it hard to breathe. It can also cause liver disease that leads to jaundice, which makes your skin look yellowish.

There's no cure, but treatments can help you manage your liver and breathing problems.

From: Alpha-1 Antitrypsin (AAT) Deficiency WebMD Medical Reference

SOURCES:

Alpha-1 Foundation: "What is Alpha-1?"

American Lung Association: "Alpha-1 Antitrypsin Deficiency."

American Thoracic Society: "Patient Information Series: What is Alpha-1 Antitrypsin Deficiency?"

Children's Liver Disease Foundation: "Alpha-1 Antitrypsin Deficiency."

Cleveland Clinic: "Alpha-1 Antitrypsin Deficiency Center."

National Heart, Lung, and Blood Institute: "What to Expect During Lung Function Tests," "What is COPD?"

National Human Genome Research Institute: "Learning About Alpha-1 Antitrypsin Deficiency."

National Jewish Health: "Alpha-1 Antitrypsin Deficiency: Inherited Liver Disease."

Reviewed by Neha Pathak on July 10, 2017

SOURCES:

Alpha-1 Foundation: "What is Alpha-1?"

American Lung Association: "Alpha-1 Antitrypsin Deficiency."

American Thoracic Society: "Patient Information Series: What is Alpha-1 Antitrypsin Deficiency?"

Children's Liver Disease Foundation: "Alpha-1 Antitrypsin Deficiency."

Cleveland Clinic: "Alpha-1 Antitrypsin Deficiency Center."

National Heart, Lung, and Blood Institute: "What to Expect During Lung Function Tests," "What is COPD?"

National Human Genome Research Institute: "Learning About Alpha-1 Antitrypsin Deficiency."

National Jewish Health: "Alpha-1 Antitrypsin Deficiency: Inherited Liver Disease."

Reviewed by Neha Pathak on July 10, 2017

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What causes alpha-1 antitrypsin deficiency?

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THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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