immune system Archives

What Causes Canker Sores?

March 16, 2018 by techbyn

Q. What causes canker sores? Why would I have a sudden outbreak of canker sores in the mouth? A. There are several theories about what leads to canker sores, those painful ulcers that form inside the mouth, on the tongue or inside the cheek or lips, though medical experts say they don’t know the precise … Read more

Can Being Cold Make You Sick?

February 23, 2018 by techbyn

Q. Can you get sick just from being cold, like sitting in an overly air-conditioned room or going out without a jacket? Or do you need to actually catch a virus or somehow be infected? A. There’s no question that people need to be exposed to viruses in order to get sick. By definition, a … Read more