Detoxing is the removal of toxins from the body in any number of ways. The one my mom uses (and swears by) is a foot spa device (http://www.lectrochi.com/). She's since become a distributor, and by law she can't say that it's anything other than a beauty device.

The reason I thought of it is because you said it changed when you went to college, and that told me it was something different in either the air, food, or water. *shrug* Or it could be stress related for all I know. *taking a wild guess*