Facts about cold

You don’t catch cold because you’re chilled or exposed to a draft. Fact…or fiction

Fiction. We used to think that colds are more common in winter simply because people spend more time indoors, where they are exposed to each other’s germs. Cold weather was not believed to have anything to do with it. However, recent research suggests that when you are chilled, the blood vessels in your nose constrict and deliver less warm blood to its lining—which means fewer white blood cells to boost the immune system and fight disease. If you happen to be harboring a cold virus but don’t as yet have any symptoms, this decreased supply of white blood cells allows the virus to multiply and give you a full-blown cold.