Actually the D I get is paired with K. It’s from Life Extension. But I will check out the aortic stenosis - have never heard of that before.
I grew up in southern California - spent a ton of time at the beach. Dr. says I’m paying the price for that now.
You might want to read up on iodine supplementation. Supposedly there’s a link between being deficient in iodine and cancer risk for some kind of cancer. A Dr. Brownstein has a good book on this. I supplement with Iodoral (and cofactors) every day along with my D3 and K2.