<<Disclaimer: Verify this information before applying it to your situation.>> With apologies to Joel, I believe there is a Vitamin K2. I urge everyone on this list to read at least one of these two well researched and referenced summary articles: http://blogs.webmd.com/integrative-medicine- wellness/2007/11/vitamin-k-keeping-calcium-in-your-bones.html and/or http://www.medscape.com/viewarticle/509074 - Read and decide for your selves. Since I have both arterial calcification and osteopenia it seems like a win win situation for me. Briefly, there is increasing research that shows vitamin K2 can aid in keeping calcium out of blood vessels (hardening of the arteries or arterial calcification) where it doesn't belong and in the bones where it does belong. Like one of the previous posters I also showed improvement on a DEXA scan in both the hip and the spine after taking vitamin K2 (the MK-7 form however) for 6 months. At the same time I also increased the amount of vitamin D, but took only the same amount of calcium I have taken for years. The first article states also that celiacs, among others, are more likely to have a deficiency of K2 because of their "digestive problems". A word of caution, if you are taking any anticoagulants, like Coumadin, you absolutely have to discuss it with your doctor first. Also do not take it at the same time if you take fiber supplements but do take it with some fat, ie butter on your toast or a oil based dressing on your salad. It's a fat soluble vitamin. You can also google "vitamin K2" for more articles. Extensive research has been done in Japan and in Europe (especially in Holland). But, except for a few, seems to be just starting here in the states. Vitamin K2 can be difficult to find but www.Amazon.com carries gluten free brands at reasonable prices, at least two of their MK-7 brands run less than $10 a month. I've taken both without any problem. Pat Visit the Celiac Web Page at Http://www.enabling.org/ia/celiac/index.html Archives are at: Http://Listserv.icors.org/SCRIPTS/WA-ICORS.EXE?LIST=CELIAC