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Message: [QUOTE="OldAlum, post: 2037159, member: 4533"] Not a doctor, but that wont stop me! (Am a retired science teacher who faced thousands of germy kids!) Colds are caused by viruses, not the cold. However, some things can make you more susceptible. You build up an immunity to the particular virus strain you have had but there are lots out there! When you move to a different area or are in close contact with people from a different area, you are likely to be exposed to a strain of virus you have not faced before and therefor you can get sick! In addition the cold air and dry heat inside can dry out the mucus membranes which are part of your defense, so viruses can more easily get in. So while you wont catch a cold from just being cold, it can lower your resistance to any virus you are exposed to. [/QUOTE]