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Nutritional Yeast – Safe to supplement with?
Nutritional yeast contains lots of B vitamins, molybdenum, magnesium, and copper, among other important vitamins and minerals. As far as I can tell it contains no vitamin A or beta-carotene. Are there any carotenoids in it? Or maybe you advise for other reasons against the supplement.
I like it b/c of the naturally occurring vitamins. I prefer to supplement with food products than with individual vitamins.
You should keep in mind that vitamins B3 and B6 have problems with toxicity.
Quote from Hermes on October 7, 2021, 6:59 am
What do you mean? Combining the two will have adverse effects?
Separately. There is a thread here about the toxicity of B6.
B3 also has problems with toxicity, although little is said about it.
https://www.ncbi.nlm.nih.gov/books/NBK559137/
https://www.sciencedaily.com/releases/2009/12/091222105449.htm
https://pubmed.ncbi.nlm.nih.gov/20480523/0
"However, at higher doses, niacin can cause more serious reactions. These include but are not limited to, hypotension, hepatotoxicity, and multiple organ failure.[6] "
"Energy drinks can contain large quantities of vitamins, including niacin. There have been isolated reports of acute hepatitis involving ingestion, which appear to be the result of high amounts of niacin from energy drinks.[7] "
"Niacin associated hepatotoxicity is generally related to ingestions of around 3 grams per day. In contrast, the more common symptom of flushing can occur at doses as low as 30 mg per day. "
"Niacin can also cause serious hepatoxicity that ranges from a mild elevation of liver enzymes to acute liver failure. The hepatocellular injury pattern is more common than the cholestatic damage pattern. Clinical manifestations are jaundice, itching, fatigue, nausea, and vomiting. Early in the course of liver injury, transaminase levels can elevate significantly but may normalize with the removal of the offending agent. The thought is that there is a direct toxic effect similar to acute hepatic necrosis. Biopsy has revealed centrilobular necrosis. The severity of toxicity seems to be dose-dependent and more commonly involves sustained-release (SR) preparations.[12]"
"A research article to be published on December 7, 2009 in the World Journal of Gastroenterology addresses the association between nicotinamide overload and type 2 diabetes. The study revealed that diabetic patients have a slow nicotinamide metabolism and thus require a longer time to clear up excess nicotinamide metabolites within the body."
"High nicotinamide intake may lead to an increase the generation of reactive oxygen species, and subsequent oxidative stress and insulin resistance, both being the major features of type 2 diabetes. Liver is the main organ responsible for nicotinamide detoxification. This study found that liver-injury-inducing drugs may reduce nicotinamide detoxification and thus impair glucose tolerance."
BTW, I really reacted badly to them recently (symptoms of peripheral neuropathy appeared). Since then I have stopped taking them.
You cannot get toxicity from water soluble vitamins(B vitamins) from food...from supplements, yes, but not from food...you just urinate the excess out.
Those toxicity symptoms you're quoting are from supplements.
Quote from zerocool on October 7, 2021, 2:35 pmYou cannot get toxicity from water soluble vitamins(B vitamins) from food...from supplements, yes, but not from food...you just urinate the excess out.
Those toxicity symptoms you're quoting are from supplements.
No, what you are saying is complete ignorance. The same as saying "excess vitamin A will come out with bile." First, read the links I provided.
I don't think it has any carotenoids, the yellow color is caused by riboflavin. It is quite estrogenic though.
Quote from salt on October 7, 2021, 3:52 pmI don't think it has any carotenoids, the yellow color is caused by riboflavin. It is quite estrogenic though.
Ah ok, good to know. There is some estrogen in it but nowhere as much as in soybeans. I think it's negligible. Judging by what others say: https://raypeatforum.com/community/threads/does-nutritional-yeast-contain-too-much-estrogen.18671/#post-445723