For many people, the idea of moderation is a tough one.  For some reason, they seem to think that if a little bit of something is good for you, a lot must be really good.  Unfortunately, it doesn’t work that way. Take vitamins, for example.  When I ask my patients about the supplements they’re taking, more and more often, I come across people who are taking more stuff than I could carry around in a laundry basket.  We have come to think of vitamins as body insurance; substances that will keep us free from disease. This is only true, however, of diseases related to vitamin deficiencies. Is this a bad thing?  Well, it’s a serious case of overkill.  Vitamins were initially developed during at a time when deficiencies were common.  However, that is pretty much not the case today (with the possible exception of Vitamin D).  We have better access to a …