Living with alpha-1 antitrypsin deficiency

Overview

Alpha-1 antitrypsin deficiency (often called AATD) is an inherited condition that affects a protein your body makes, mostly in the liver. That protein normally travels through your blood to protect your lungs from damage. When it is missing or not working well, your lungs can get damaged over time, and your liver can also be affected. It is a genetic condition, meaning it runs in families.

No, alpha-1 antitrypsin deficiency is rare. It is thought to affect about 1 in every 2,500 to 5,000 people worldwide. Many people have the gene change but never develop serious problems.

AATD can affect anyone, because it depends on the genes you inherit. Lung symptoms like shortness of breath usually start between ages 20 and 50, especially if the person smokes. Liver problems can also happen in children, and in adults as the condition progresses. Some people with the gene never have any symptoms.

Symptoms

Common symptoms

• Shortness of breath, especially during activity
• A wheezing sound when you breathe
• A persistent cough that may bring up mucus
• Frequent lung infections, like bronchitis or pneumonia
• Chest tightness or discomfort
• Fatigue and reduced ability to exercise

Symptoms in children

• Yellowing of the skin or eyes (jaundice)
• Swelling in the belly or legs
• Poor weight gain or slower growth
• Unusually dark urine or pale stools

Symptoms in older adults

• Symptoms of chronic obstructive pulmonary disease (COPD), such as breathlessness and cough
• More frequent lung infections
• Fatigue and weakness
• Unexplained weight loss

Causes

Main causes

• Alpha-1 antitrypsin deficiency is caused by a change (mutation) in the SERPINA1 gene. This gene carries the instructions for making a protein called alpha-1 antitrypsin, which looks after the lungs and liver.
• The condition is inherited in an autosomal recessive pattern. This means a child needs to receive the changed gene from both parents to have AATD. If only one parent passes the gene, the child is a carrier and usually has no symptoms, but can pass the gene on.

Risk factors

• Having a family history of AATD, emphysema, or liver disease of unknown cause
• Being a carrier of the gene (when a parent is a carrier or has AATD)
• Smoking or being exposed to tobacco smoke
• Working in dusty or fume-filled environments, such as with wood dust, metal dust, or certain chemicals

When to see a doctor

See a doctor urgently if:

• If you have sudden or very bad shortness of breath
• If you cough up blood
• If you experience severe chest pain or feel like you are going to faint
• If you notice a sudden yellowing of your eyes or skin
• If you have a high fever with shaking and a cough

Book a routine appointment if:

• If you have a chronic (long-term) cough, wheeze, or breathlessness that is not going away
• If you get more than one lung infection a year
• If you feel very tired without a clear reason
• If your children have symptoms like jaundice, slow growth, or swollen belly
• If a close family member has AATD, even if you feel fine

Diagnosis

A doctor may suspect alpha-1 antitrypsin deficiency based on your symptoms, especially if you have lung problems at a young age or a family history. The diagnosis is made with a blood test that checks the level of alpha-1 antitrypsin protein in your blood. A genetic test can also confirm the exact gene changes.

Tests that may be done

• Blood test to measure the amount of alpha-1 antitrypsin in your blood
• Genetic test to look for changes in the SERPINA1 gene
• Lung function tests (spirometry) to check how well your lungs are working
• A chest X-ray or CT scan to see the condition of your lungs
• Liver function tests to check the health of your liver, and sometimes an ultrasound or liver biopsy

What to expect at your appointment

If you are being tested for AATD, the main step is a blood sample, which is quick and simple. If the results show you have AATD, your doctor will probably want to do some breathing tests and liver checks to get a full picture of your health. You may be referred to a specialist, such as a lung doctor (pulmonologist) or a liver doctor (hepatologist). You are allowed to ask questions and take time to understand the results.

Treatment

Treatment for alpha-1 antitrypsin deficiency focuses on protecting your lungs and liver, easing symptoms, and preventing complications. There is no cure, but many people manage well with the right care. Treatment plans are tailored to each person, depending on whether the lungs, liver, or both are affected.

Self-care at home

• Do not smoke. This is the single most important step a person with AATD can take.
• Avoid second-hand smoke, air pollution, and workplace dust or fumes.
• Stay up to date with flu, pneumonia, and COVID-19 vaccines to reduce lung infections.
• Drink alcohol only in moderation, or avoid it, to protect your liver.
• Exercise regularly as recommended by your doctor to strengthen your lungs and overall health.
• Eat a balanced diet and stay at a healthy weight.

Medical treatments

Doctors may offer treatments that help open the airways, such as inhalers used for lung diseases like COPD. For people with low alpha-1 protein levels and lung disease, a treatment called replacement therapy (or augmentation therapy) may be considered. This involves regular infusions of the missing protein made in a laboratory. It is not a cure, but it may slow down further lung damage. Oxygen therapy can also be used if oxygen levels in the blood are low. Always talk to your healthcare team about what options are appropriate for you.

When is surgery considered?

In severe liver disease caused by AATD, a liver transplant may be considered if the liver fails. This is a major operation and is only recommended after careful evaluation by a specialist team. For advanced lung disease, lung volume reduction or a lung transplant can be options for some people, but these are reserved for very severe situations.

Living with this condition

Living with AATD means paying attention to your body and protecting your health. It can help to plan your day around your energy levels, use breathing techniques taught by your doctor, and avoid known triggers such as smoke, strong fumes, and very cold or very hot air. Many people continue to work, travel, and enjoy family life with the right adjustments.

Lifestyle tips

• Quit smoking and avoid smoky environments.
• Get regular, gentle exercise like walking, swimming, or cycling — ask your doctor what suits you.
• Pace yourself: take breaks and do not push through extreme tiredness.
• Get enough sleep and manage stress with relaxation or mindfulness.
• Join a pulmonary rehabilitation program if your doctor suggests it — it combines exercise and education.
• Keep up with routine medical checkups, including lung and liver tests.

Diet and exercise

Aim for a varied diet with plenty of fruits, vegetables, whole grains, and lean protein. If you are underweight, which can happen with severe lung disease, your doctor or dietitian can help you add healthy calories. For your liver, it is wise to limit alcohol and avoid eating large amounts of fatty, processed foods. Gentle exercise, such as walking or light stretching, helps keep your lungs working well, but always follow the advice of your healthcare team.

Mental health and emotional wellbeing

Living with a chronic condition can feel stressful, worrying, or lonely at times. It is completely normal to have moments of anxiety or sadness. Speaking to your doctor about how you feel, joining a support group, or talking to a therapist can help. Remember that your mental health is just as important as your physical health.

Prevention

AATD itself cannot be prevented because it is inherited. But you can help prevent or delay the serious complications. The most important step is to not smoke. Avoiding lung irritants, getting regular checkups, and following treatment advice can keep your lungs and liver healthier for longer.

Vaccines

Vaccinations are an important part of staying healthy with AATD. All standard immunisations are recommended, especially vaccines against flu, pneumococcal infections, and COVID-19, because respiratory infections can be more serious for people with lung problems. Ask your doctor or pharmacist about the vaccines you need.

Screening programmes

If you have a family history of AATD, you might consider testing to know your own status, even if you have no symptoms. This is a personal choice, and your doctor can help you weigh the benefits and concerns. Testing can help you make lifestyle changes early and plan your care. In some countries, newborn screening is carried out, but this varies by region.

Complications

If left untreated

• Progressive lung damage leading to emphysema, which makes it harder to breathe over time
• Chronic obstructive pulmonary disease (COPD) and frequent lung infections
• Liver problems such as cirrhosis (scarring of the liver), which can lead to liver failure
• Increased risk of liver cancer, especially if cirrhosis develops

Long-term outlook

Although AATD is a lifelong condition, many people live full, active lives with the right care. The key is early detection, avoiding smoking, staying healthy, and working closely with your medical team. New treatments and supportive care are improving all the time. It is natural to feel concerned, but remember that you have more control than it may seem, and you are not alone.

Find support

External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.