This is just a tip a recently tried.  We tend to eat a lot of Mexican food which in turn, we eat a lot of sour cream.  Sour cream has a lot of fat in it.  If I'm gonna eat fatty foods, it might as well be a desert, right?  So someone told me they use plain yogurt in place of sour cream.  I'm not quite ready for that, but I've been mixing the 2 and James hasn't seemed to notice.  Just another way to try to keep my family healthy!