Vitamin D stimulates the co-absorption of toxic metals including lead, cadmium, aluminum, and cobalt; and radioactive isotopes such as strontium and cesium.

I don't particularly buy the Marshall Protocol theory, but I'm starting to wonder if the phenomenon of low vitamin D is not a result of insufficient exposure to sunlight, but is instead a protective response to some kind of environmental stress.

Vitamin D increases intestinal calcium and phosphate absorption. Not so well known, however, is that vitamin D stimulates the co-absorption of other essential minerals like magnesium, iron, and zinc; toxic metals including lead, cadmium, aluminum, and cobalt; and radioactive isotopes such as strontium and cesium. Vitamin D may contribute to the pathologies induced by toxic metals by increasing their absorption and retention. Reciprocally, lead, cadmium, aluminum, and strontium interfere with normal vitamin D metabolism by blocking renal synthesis of 1,25-dihydroxyvitamin D. This is the first review of the role of the vitamin D endocrine system in metal toxicology.

http://www.jacn.org/content/13/6/559.abstract

crincrin wrote:I'm starting to wonder if the phenomenon of low vitamin D is not a result of insufficient exposure to sunlight

The link I originally got this from is no longer available but I got this quote from a prior post here that has been posted a couple times before. I'm sure the rest of it could be found via google.



"To assess vitamin D deficiency, serum levels of 25-OH vitamin D3 are usually tested. Unfortunately this is done without any consideration for thyroid status, although it has been known for more than 30 years that thyroid hormones control Vitamin D metabolism.

Hypothyroid children have higher serum levels of both calcium and 1,25-dihydroxy-vitamin D3, while having lower levels of osteocalcin (Lauffer et al, 1993; Verrotti et al, 1998), while the opposite is reported in hyperthyroidism (Saggese et al, 1990). These levels normalize after thyroid status is corrected (Verrotti et al, 1998; Saggeese et al, 1990)."