Respiratory Health: How Lungs Work and Common Breathing Problems
Every breath you take depends on your respiratory system. This guide explains, in simple language, how breathing works, what a normal breathing rate is, common lung infections and diseases, and when to see a doctor.
Have a question about your breathing or lungs? Ask ANYA on WhatsApp, in your own language, any time.
What Is the Respiratory System?
The human respiratory system, also called the breathing system or lung system, is the group of organs that helps you breathe. It brings oxygen into your body and removes carbon dioxide.
Main respiratory organs:
- Nose and mouth: where air enters
- Throat (pharynx) and voice box (larynx)
- Windpipe (trachea): carries air down to the lungs
- Bronchi and bronchioles: airways that branch into each lung
- Alveoli: tiny air sacs where oxygen passes into the blood
- Diaphragm: the muscle below the lungs that helps you breathe in and out
The nose, throat and voice box together form the upper respiratory tract. The windpipe, airways and lungs form the lower respiratory tract.
What Is a Normal Respiration Rate?
Your respiratory rate (or breath rate) is the number of breaths you take per minute. For a healthy adult at rest, the normal respiration rate is about 12 to 18 breaths per minute.
The average breathing rate can change with age, activity, fever and overall health. Children breathe faster than adults. If breathing is unusually fast or difficult at rest, consult a doctor.
Common Respiratory Infections
Respiratory infections are among the most common illnesses. They can affect the upper or lower airways.
Upper Respiratory Tract Infection
An upper respiratory tract infection (URT infection or upper airway infection) affects the nose, throat and sinuses. The common cold is the most familiar example. Symptoms include a runny or blocked nose, sore throat, sneezing and mild cough. Most get better on their own, but see a doctor if symptoms are severe or last long.
Community Acquired Pneumonia
Community acquired pneumonia is a lung infection picked up outside a hospital, in everyday life. It inflames the air sacs in the lungs, which may fill with fluid.
Common symptoms: cough (sometimes with phlegm), fever, chills, chest pain while breathing and shortness of breath.
Pneumonia can be serious, especially for young children, older adults and people with other health conditions. See a doctor promptly if you suspect it.
RSV and Acute Bronchiolitis
Respiratory syncytial virus (RSV) is a common virus that usually causes cold-like symptoms. In infants and young children, it can cause acute bronchiolitis, an infection of the small airways in the lungs.
Acute respiratory illness is a general term for sudden-onset infections like these.
Chronic Lung Diseases
Some lung diseases develop slowly and last a long time.
COPD (Chronic Obstructive Lung Disease)
COPD lung disease (chronic obstructive lung disease) is a long-term condition that makes it hard to breathe out fully, because the airways are narrowed or damaged. Smoking is a major cause, and long-term exposure to smoke, dust or air pollution can also contribute.
Common symptoms: a long-lasting cough, phlegm, breathlessness during activity, and wheezing.
Interstitial Lung Disease
Interstitial lung disease is a group of conditions that cause inflammation and scarring of lung tissue. When the scarring is significant, it’s called fibrotic lung disease.
Asthma and Tuberculosis
Asthma causes the airways to swell and narrow, leading to wheezing, coughing and breathlessness, often triggered by allergens, exercise or cold air. Tuberculosis is a serious infection that mainly affects the lungs.
Respiratory Symptoms You Shouldn’t Ignore
See a doctor if you have:
- A cough lasting more than three weeks
- Wheezing (a whistling sound when breathing)
- Shortness of breath during daily activities
- Coughing up blood
- Chest pain when breathing
- High fever with cough
Emergency warning: If someone has severe difficulty breathing, bluish lips, or confusion, go to the nearest hospital immediately.
When to See a Pulmonologist
A pulmonologist is a doctor who specialises in the lungs and respiratory diseases. Your doctor may refer you to one for long-lasting breathing problems, COPD, asthma that is hard to control, interstitial lung disease, or abnormal lung test results.
Keeping Your Lungs Healthy
- Don’t smoke, and avoid second-hand smoke
- Reduce exposure to dust, smoke and air pollution where possible
- Wash your hands regularly to prevent infections
- Stay physically active
- Ask your doctor about recommended vaccines
How ANYA Helps with Respiratory Health
ANYA, Lupin’s free AI health assistant, answers your breathing and lung questions 24/7 on WhatsApp.
Try asking: “What is a normal breathing rate?”, “What are the symptoms of pneumonia?” or “What is COPD?”
ANYA provides health information, not diagnosis or treatment.
Frequently Asked Questions
The main respiratory organs are the nose, throat, voice box, windpipe (trachea), bronchi, lungs and the tiny air sacs called alveoli. The diaphragm, a muscle below the lungs, helps you breathe in and out.
For a healthy adult at rest, the normal respiration rate is about 12 to 18 breaths per minute. It can rise with activity, fever or illness.
It is a lung infection caught outside a hospital, in everyday life. It causes cough, fever, chest pain and breathlessness, and needs prompt medical care.
Respiratory syncytial virus (RSV) is a common virus that usually causes cold-like symptoms. In infants, it can cause bronchiolitis. Seek medical care if a baby has fast or difficult breathing, wheezing or trouble feeding.
Wheezing is a whistling sound that happens when the airways narrow. Common causes include asthma, COPD and infections such as bronchiolitis. See a doctor if it’s new or doesn’t go away.
COPD (chronic obstructive lung disease) is a long-term condition that makes it hard to breathe out fully. Smoking is a major cause, and symptoms include a lasting cough, phlegm and breathlessness.
It is a group of conditions that cause inflammation and scarring of lung tissue. It usually causes a dry cough and gradually worsening breathlessness.
Your doctor may refer you to a pulmonologist, a lung specialist, for long-lasting breathing problems, COPD, asthma that is hard to control, interstitial lung disease, or abnormal lung test results.
See a doctor if a cough lasts more than three weeks, or sooner if you have high fever, breathlessness, chest pain or cough up blood.
