Re: cold a symptom of iodine detox, sole for salt loading?

If you look at most cod liver supps you will see they generally have an A:D ratio of about 5:1 (A to D).

There have been quite a few studies showing that safe upper limit of D is often in stark contrast and over the toxic level of D shown by other studies. Like so many things studies like these dont look at the whole picture but just the added supplement and not everything. Both A and D have gone through their time in the sun so to speak but rarely are they looked at in the complete light of how they work with their complete cosupplement contingent and when looked at individually its easy to find "problems" with just one or just the other.

Looking at how A and D interact without taking into account K, magnesium and zinc gives false data which quite honestly I think is how the D council is looking at things.

westonprice.org spends significant time looking at the fat soluble vitamins and their related synergy to each other.

One of the falsehoods regarding vit D levels and whats acceptable has come from those who in the sun a lot and the estimation that they can make 10K iu daily. In stark contrast, many people who have consumed that for any length of time (>3 months or so) have actually displayed symptoms of toxicity. However the question then is are these toxicity symptoms solely due to vit D levels OR the high D in the absence of the rest of the cofactors (ie A, K, zinc, magnesium etc).

My personal opinion based on my own research is that we dont need these uber high levels of vit D, what we need is decent amounts of vit D AND the proper cosupplements.

Getting your 25(OH)D levels checked is just a start, if you bust out your google-fu you will find testimony from many people who had 25(OH)D levels below whats commonly considered toxic yet still had problems with high calcium levels so with that in mind one really should also be getting calcium levels checked along with rbc zinc and magnesium.

In terms of competition at the receptor, once again I think a crazy complex subject and its not as simple as saying A competes with D and therefor its a bad thing. For example one study used pancreatic progenitor cells and exposed them to either calcitriol (active vit D), atRA (vit A) or both and proliferation was promoted by calcitriol, atRA and both together.

The body has an amazing way of making due with what it has when conditions arent optimal so it would make sense that cell proliferation can be promoted by many sources to further the existance of life when a shortage ocured but once again I think this boils down to the importance of having a balanced mix as the ideal target to shoot for.