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Vitamin A Content of Certain Food-Grade Supplements
Doctor's Research is the company in question. I'm going to try a vitamin A reducing diet. I understand that a B-complex helps things immensely. One of the only B-complexes that I've tried that I react well to is their B-Stress Complex, here: https://doctorsresearch.com/fr-products/947/b-stress-complex/
As you can see, the B vitamins are made by concentrating the B-vitamin-containing portion of nutritional yeast (in "Other Ingredients" it reads: "Enzymatically processed Saccharomyces Cerevisiae"). I'm given to understand that brewer's/nutritional yeast has too much vitamin A for this diet. However, in reply to my query, the company replied that their yeast aren't grown on any substrate that has vitamin A - so that the yeast complies with the right nutritional profile, it's only grown on selective substrate that are in line with the Nutrition Facts. They said positively that the product contains nothing except what's on the label.
Of their other stuff they made similar comments. A choline supplement with choline extracted from palm kernel oil; a magnesium product extracted from spinach; a vitamin C product from acerola cherry - these plants are said to be grown hydroponically on selective soil to conform to the listed nutrients. Here are links to the products:
https://doctorsresearch.com/fr-products/1231/choline-complex/
https://doctorsresearch.com/fr-products/1362/magnesium-complex/
https://doctorsresearch.com/fr-products/1192/c-complex/
My question is, how reliable is this info? I'm hoping someone more knowledgeable than I will help to confirm if this is possible with yeasts and plants. I don't want to spin my wheels on a restrictive diet while unknowingly eating sources of vitamin A.
Where is the evidence that you need to take a vitamin B family supplement for vitamin A detox? I am new around here and not familiar with all of what people do.
I don't think nutritional yeast / brewers yeast has any VA at all, unless it has specifically been fed it, in which case it would probably be on the label as it would be a selling point that it has that "nutrient". However according to the link it seems like they have fed the yeast alfalfa sprouts and some other plants which could have significant amounts of carotenoids.
It's probably a good idea to avoid "food based supplements" unless all those foods conform to whatever diet you're on.
Quote from salt on June 3, 2021, 2:38 pmI don't think nutritional yeast / brewers yeast has any VA at all, unless it has specifically been fed it, in which case it would probably be on the label as it would be a selling point that it has that "nutrient". However according to the link it seems like they have fed the yeast alfalfa sprouts and some other plants which could have significant amounts of carotenoids.
It's probably a good idea to avoid "food based supplements" unless all those foods conform to whatever diet you're on.
I don't think the sprouts were fed to the yeast, I think the product page says some of the vitamins were extracted from the sprouts (as well as yeast and oat bran). But your advice seems wise...
What do you think of their claim that the plants in the formulas (like the alfalfa sprouts) were artificially grown (hydroponically) to match the nutrient profile of the label?