Greg, I also have a thyroid issue, I had to have surgery 26 years ago and was on a natural thyroid for many years and had perfect cholesterol. The manufacturer of the thyroid suppliment I was taking stopped making it and my doctor put me on Synthroid, I did not do as well on Synthroid and didn't learn that there were still company's that make a natural thyroid until I got my computer. Armour makes one and it has all that your body needs where as the synthetic does not. I am anxious now to see if it has helped my cholesterol go down to what it used to be. At least the natural has slowed the hair loss. Here is something else that was funny to me, when my husband found that his cholesterol was up we quit eating the 2 eggs for breakfast and guess what, my cholesterol went up. Go figure !!