A study done by Yale University Scientists has confirmed the age-old medical myth that cold temperatures can cause colds.
The study said that even a slight chill increases the speed at which rhinoviruses, which cause the common cold, multiply in lab mice. Cold temperatures also trigger immune-system changes that let the viruses replicate virtually unchecked.
Exposure to a rhinovirus is still a prerequisite for catching a cold but once a few viruses have entered cells of the nasal cavity, inhaling cold winter air exposes those cells to the chill and causes the immune system to respond less aggressively.
The new study was published in Proceedings of the National Academy of Sciences.
Content modified from the post of Sharon Begley on Reuters