Thank you so much for your replies and info! I am preparing to move 7000kms away next week, so I haven't been checking in, even though I've been hoping that someone might have ideas.
To answer some questions, I do have a history of hypothyroid, and did while pregnant with all of my children. Two had TT as newborns and one only developed it after turning seven. That was odd. All of them have been clipped now, and the caries in our 2 yr old's mouth are healing rapidly.
I discovered after posting, and putting a flashlight into my children's mouths, that two of my children each have a small carrie in their six-yr old molar on the bottom right. Then, I discovered that I have one in the very same place on the same tooth! So I looked up tooth mapping for organs and emotions and found the symptoms relate strongly to adrenal stress, and just from a purely physiological perspective, this past winter was brutally cold, and torturously long, then our summer lasted two weeks, and has been cold otherwise. Usually, we have some reprieve from the cold winter with a longer, warmer summer. It has been the coldest on record for the past 50 years, and by a lot. These two children were born in the south, and show symptoms of intolerance to the cold. I definitely do, and suffered a serious hypothermic episode two years ago that resulted in nerve damage to my legs (which has healed significantly recently, even with the cool summer, but still isn't back to normal).
This stress on our genetically moderate-climate bodies is a major reason why we are leaving the north. Our diet includes organ meats and as wide a variety of foods as we can obtain up here, which is not nearly as much as down south. We have been eating as much pastured meat as possible, and raised our own last year, consuming the organs as well. When we arrive at our moderate-climate southern home (just north of coastal Maine, with the warmest waters in all of Canada, though still with winter, but for 3-4 months instead of 9 like up here), we will have more variety and also we will be eating wild as much as possible. I am looking forward to that. When we eat wild up here, we feel so much better, but unfortunately, it ha been a bit of wilderness famine with the blossoms having died early in the spring from cold; even the bears are coming into towns and breaking into houses to get food from the lack of wild vegetation and prey that eats it.
We take D3, Mg oil topically, and supplement with ionic minerals. I don't know if we can do anything else, but from what I have read in my anthropological studies, we are really not going to adapt to our climate up here, and that alone could be a major contributing factor in our physical health. Our guts do very well in moderate temps, but during the winter, the more exposure we have, the harder it is to absorb nutrients, and I see symptoms of deficiency of nutrients that we consume in large bio-available quantities, and that during the summer, these symptoms disappear.
I think we just need to be warmer. I will update when I can. We'll be "dark" beginning Aug 31st and until we can set up our satellite internet. Until then, I will check in, and thank you again; I'm going to look into what you wrote more so that I can see if there's anything else I can do to improve the situation.