hehehe i'm glad at least people are checking in!
56. i take it (ie hope) that's ng/mL which would be about 140 nmol/L, if so well done!
check out magnesium and zinc links to hypothyroidism. especially relevant when high dosing d3.
what's your daily magnesium form, intake, and timing in relation to d3? pls remind me also, do you take zinc, if so what form, and how much daily?
what are your main dietary sources of mag and zinc?
wow that OB-GYN is out of it huh! it's sun OR dietary/supplemental, which is then hydroxylated to the 25(OH)d3 form that we test, in the liver. (needs good zinc status for optimal conversion performance BTW), and then 25(OH)d3 is hydroxylated in the kidney, to the 1,25(OH)2d3 form that we test less and for different reasons.
yes people that cover themselves or have darker skin or older skin synthesize less vitamin d3 from the sun. that's where dietary/supplemental d3 comes in!! eg arctic indigenous foods *must* provide vitamin d3 without requiring cutaneous exposure to sunlight.
(stupidly long science direct link omitted)
Vitamins A, D, and E in Canadian Arctic traditional food and adult diets
...180 independent samples of Arctic traditional food species expected to be reasonable sources of fat soluble vitamins were sampled from a wide geographic range. ...Excellent sources of all three nutrients were found in sea mammal fats (beluga, narwhal, seal, walrus) and organ meats (liver of both sea and land species). Fish (char, cisco, lake trout, loche, sculpin, whitefish) was especially rich in D, with highest levels in loche liver (mean 318 μg/100 g). ...traditional food resources that are excellent sources of fat-soluble nutrients can be promoted to protect vitamin nutrition in Arctic indigenous populations.
that ob-gyn should take some lessons from you hannakat