Seasonal sickness: Why colds are common in winter?

The combination of environmental factors and lifestyle changes during the winter months contributes to an increased risk of catching a cold

Hyderabad: You are more likely to catch a cold in winter for several reasons, primarily related to environmental factors and changes in behaviour during the colder months.

Cold air can weaken the immune system, making it less effective at fighting off infections. Additionally, viruses like the common cold tend to thrive in colder, drier conditions, which makes winter an ideal time for them to spread.

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During winter, people tend to spend more time indoors in close proximity to one another. This increases the chances of being exposed to the viruses that cause colds, as they spread more easily in confined spaces.

Cold winter air is often dry, and indoor heating systems can further dry out the air. Dry air dries out the mucous membranes in your nose and throat, making it easier for viruses to enter your body and cause illness.

Winter days are shorter, and there’s less exposure to sunlight. This can lead to a reduction in vitamin D levels, which plays a role in immune function. A weakened immune system can make you more susceptible to infections like the common cold.

During the winter months, people are more likely to stay indoors, engage in close-contact activities, and might also be more susceptible to stress and other factors that can lower immunity.