BRRR. Are you sensitive to the cold? No, we are not talking about the blizzard outside right now, Marylanders. We are talking about your teeth! If you are experiencing tooth sensitivity in response to cold food or drink, your age may be to blame. Surprisingly, tooth sensitivity increases most between the ages of 25 to 30 years old. If you practice good oral hygiene and are not showing any signs of decay, the sensitivity at this time probably isn’t a cause for concern. However, if you are experiencing sudden teeth sensitivity central to one or all of your teeth, it may be a sign of another problem.