From frostbite to hypothermia, extremely cold can be dangerous.
The cold also can affect your lungs.
But can extremely low temperatures freeze your lungs?
“Our body does its best to keep our core temperature about 37 degrees (celsius), and our lungs are encased within our thoracic cavity. Unless your whole body is at risk, freezing your lungs should not be at risk,” said Dr. Aryan Shiari, a pulmonologist with Mayo Clinic Health System.
He says the cold dry air can enter your lungs and cause irritation, leading to bronchospasm that could cause a tightening sensation of the chest. Your lungs themselves likely won’t freeze.
You may experience discomfort or even a burning sensation from breathing in those bitter cold temperatures, however. That’s common.
“Our bodies are very well-designed to adapt to cold air coming in. There are many mechanisms that allow for warming and humidification of the air before it actually hits your lungs where a gas exchange happens,” Shiari explained. “What happens is that cold air is generally drier, and your body works to humidify this. In that process, it can cause irritation to the airways, which results in a process called bronchospasm, where those airways narrow and tighten, and you get that feeling of shortness of breath.”
People with chronic lung disease
The extreme cold air can be dangerous for anyone, but for those with chronic lung diseases, such as chronic obstructive pulmonary disease, the cold can make things feel worse. With emphysema, for instance, the cold air can cause spasms of the bronchial passage, making it more difficult to breathe.
Patients with respiratory disease, whether it’s asthma, COPD or other lung diseases, are more prone to have exacerbations of their symptoms if facing cold winter conditions. The best thing they can do in order to protect themselves is to be prepared. Whether that’s having an extra supply of their inhaler regiment for a few days in case of an emergency or having an emergency generator for their medical equipment, such as ventilators, CPAP machines or oxygen concentrators, Shiari said.
Tips to breathe safely
Shiari said you should try to avoid being outside during a winter storm. He said if you do have to be outside, follow this breathing advice.
“If you’re going to breathe in, generally breathing in through your nose and exhaling through your mouth is better,” he said. “Your nose does a better job at humidifying and warming the air than your mouth. Having a scarf to wrap around your nose and mouth, or a ski mask, while outdoors can help, as it can trap some of that heat and moisture.”
And try to avoid exercising outside in the cold weather if you suffer from asthma, COPD or chronic lung conditions.
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