I forgot to add that I mentioned to the late July endocrine surgeon that I was taking vitamin K2 and vitamin D to round up the calcium wandering around in my circulatory system to put it back in my bones and teeth: K2 and D -- both fat soluble vitamins (though D is really a hormone I understand) -- work together to do this. [I take the highest dose of atorvastatin too. The statins are known to cause calcium to leave bones and teeth and then become deposited in the arteries which is BAD and undesirable. I also have CAD (coronary artery disease) and my coronary arteries are moderately to severely calcified.] He said that I must stop taking the D because he said that those who have hyperparathyroidism (as I have) and who take vitamin D get into big troubles with calcium. I asked him for any published study on this and he said he only knows this from his own experiences. [He's maybe 40 but I'm only guessing.] I have stopped taking D but know it's important for a number of health reasons. Do any of you know about vitamin D causing big calcium troubles for those having hyperparathyroidism? Maybe I can get a small amount of D naturally from cod liver oil which seems to only have a small amount of it. I don't go into the sun much at all due to the skin type I have, due to my skin burn history in boyhood, and due to some head and leg squamous cell carcinoma lesions having been excised.]