Ryder: I think there's some very interesting new evidence that vitamin D may have certainly more benefits above just building strong bones. It may improve your body's defenses and it may also play a role in reducing some of the destructive effects of inflammation. And the mouth is a unique area to look at that because periodontal diseases are so common - you have a bacterial infection and you have an inflammatory response. And so one of the areas that myself and others are beginning to look at are the effects of one, vitamin D deficient patients. Do they get more disease? And two, are there benefits in giving, let's say, high dietary supplements of vitamin D?
Narrator: For Science Today, I'm Larissa Branin.