AGE is the technical term for a protein plus a sugar. Proteins are all over the place—whether it’s in the form of an enzyme or a structural protein like the ones in your eyes or heart. Proteins get sugar coating and that makes them dysfunctional. It’s kind of like the bottom of a ship that gets barnacles and then it won’t float so well anymore. When this happens, the body has to throw out those proteins or recycle them—or its very stressful to the body, and it’ll wear down.