Franz said:What would you consider to be a safe amount vitamin A when thyroid is not supplemented?
j. said:Franz said:What would you consider to be a safe amount vitamin A when thyroid is not supplemented?
There are people who don't supplement that have very high metabolism, I think you might find them in countries where coconut oil is the main cooking oil. Vitamin A requirements might change drastically from person to person, depending on their sun exposure and other factors. I think it's a matter of trying out different quantities, considering how you feel, looking if your calluses turn orange and things like that.
Chronic hypervitaminosis A is induced after daily doses of 2 mg retinol/kg in oil-based preparations for many months or years. In contrast, doses as low as 0.2 mg retinol. kg(-1). d(-1) in water-miscible, emulsified, and solid preparations for only a few weeks caused chronic hypervitaminosis A. Thus, water-miscible, emulsified, and solid preparations of retinol are approximately 10 times as toxic as are oil-based retinol preparations. The safe upper single dose of retinol in oil or liver seems to be approximately 4-6 mg/kg body wt. These thresholds do not vary considerably with age.
Jenn, can you clarify what you mean when you say, "I don't supplement."Jenn said:I don't supplement. I do use coconut oil as my primary source of fat.
Ah OK.Jenn said:I don't supplement vit A. That was the topic wasn't it?
I don't eat liver either....though I did find a yummy looking recipe for curried liver today.
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