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Cold Weather and Your Lungs – All you need to know

Understanding the Impact of Cold Weather on your lungs

Cold air can negatively affect lung health, especially for those with pre-existing lung conditions like asthma. A survey from Asthma + Lung UK found that 70% of respondents reported worsening symptoms due to cold air.

Here are some reasons why:

  • Airway Constriction: Cold air can cause your airways to narrow, increasing mucus production and making breathing more difficult.
  • Irritation of Airways: Cold, dry air may irritate airways, leading to symptoms such as wheezing, coughing, and breathlessness.
  • Weakened Immune System: Exposure to cold can weaken your immune response, making it harder to fend off respiratory infections like colds and flu.
  • Increased Indoor Time: Cold weather often keeps people indoors, which can facilitate the spread of respiratory infections.

Why Does Asthma Often Feel Worse in Cold Weather?

Cold air can irritate the airways and cause them to narrow, particularly in people with asthma. This may lead to increased coughing, wheezing, chest tightness, or breathlessness during colder months.

Exercising outdoors in cold weather or breathing in cold, dry air can make symptoms more noticeable in some individuals. Viral infections, which are more common during winter, may also contribute to worsening asthma symptoms.

If breathing symptoms become more frequent or difficult to control during colder weather, it may be appropriate to seek medical advice.

Tips for Protecting Your Lungs in Cold Weather

Going Outside:

Warm the Air You Breathe:

  • Breathe in through your nose and out through your mouth.
  • Use a mask or wrap a scarf around your nose and mouth.

Check the Weather:

  • If conditions are too cold or windy, consider staying inside.

Stay Warm:

  • Wear a hat, gloves, and layered clothing.
  • Keep your reliever inhaler (usually blue) with you.

Staying Warm at Home:

  • Indoor Temperature: Keep living spaces at least 18°C (64°F) using a thermometer.

Warmth Tips:

  • Drink hot beverages regularly.
  • Use blankets or hot water bottles.
  • Close windows and use draft excluders.
  • Stay active; move around to generate body heat.

Managing Damp and Mould:

  • Risk Awareness: Damp conditions can lead to mould growth, which is harmful to lung health. Common signs include fuzzy black, white, or green patches on walls.
  • Prompt Action: Address damp and mould issues quickly to prevent respiratory problems, especially in vulnerable groups (children, older adults, those with lung conditions).

Staying Active:

  • Importance of Exercise: Regular physical activity improves lung function and helps manage lung conditions.
  • Indoor Activities: Engage in indoor exercises, like chair Zumba, to stay active during the cold months.

Cold weather increases the risk of infections, including:

  • Common cold
  • Flu
  • Coronavirus
  • Respiratory syncytial virus (RSV)
  • Chest infections (e.g., pneumonia)
  • Infections can exacerbate symptoms for those with lung conditions, as noted by 75% of survey respondents who reported that colds and flu worsen their symptoms.

Preventative Measures:

  • Avoid contact with sick individuals as much as possible.
  • Practice good hygiene to reduce the spread of infections.
  • Staying proactive during cold weather is essential for lung health. By taking precautions outdoors, ensuring a warm indoor environment, and managing dampness, individuals with lung conditions can minimize risks and maintain their well-being during winter months.
Why does cold weather make breathing harder?

Cold air can cause airways to constrict and become more sensitive, which may worsen breathlessness for people with conditions like asthma, COPD, or bronchiectasis.

When should I see a respiratory specialist for cold-related breathlessness?

If you notice persistent or worsening breathlessness in cold weather that affects your daily activities, it can be helpful to get specialist assessment to identify the cause and guide treatment options.

Can cold weather cause a cough?

Cold air can irritate the airways and trigger coughing, particularly in people with asthma or other respiratory conditions.

Why are breathing problems worse in winter?

Cold air, viral infections, and spending more time indoors can all contribute to worsening respiratory symptoms during winter months.

Considering a Specialist Respiratory Opinion?

Concerned about your breathing or lung health?

If symptoms are persistent, worsening, or affecting daily life, a specialist respiratory assessment can help clarify the cause and discuss appropriate treatment options.



Consultant Respiratory Physician

Dr Shalin Diwanji is a Consultant Respiratory Physician providing specialist assessment and care for a wide range of lung and breathing conditions in London.