AdvertisementWith this in mind, I got to wondering why we are more susceptible to sickness during winter. Why are we more sick in winter? Some early studies have suggested that the cold and dry conditions of winter could make it harder for your immune system to fight off viruses. But breathing in cold, dry air during the winter months can affect the mucus and cilia lining your nose and throat, making them less efficient.”AdvertisementVery interesting (and a little gross). “During winter, reduced sunlight exposure leads to lower production of vitamin D in the skin.

Source: Huffington Post January 20, 2026 15:50 UTC