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High doses of B vitamins may cause side effects, the experts note. These include nausea, diarrhea, headaches or skin flushing, per the Cleveland Clinic. "We don't advise anyone to take large doses
Megavitamin-B 6 syndrome, also known as hypervitaminosis B 6, vitamin B 6 toxicity, and vitamin B 6 excess, [a] is a medical condition characterized by adverse effects resulting from excessive intake of vitamin B 6.
High levels of niacin, an essential B vitamin, may raise the risk of heart disease by triggering inflammation and damaging blood vessels, according to new research.
About 1 in 4 Americans have too much niacin in their body from eating meats and nuts, but some people are still taking it as a supplement. Excess amounts of this B vitamin linked to higher heart ...
Hyperhomocysteinemia is typically managed with vitamin B 6, vitamin B 9 and vitamin B 12 supplementation. [4] Hyperhomocysteinemia is a risk factor for cardiovascular disease; supplements of these vitamins may slightly reduce stroke outcome but not myocardial infarction, death from any cause or adverse events. [5]
Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called hypervitaminosis A. Hypervitaminoses are primarily caused by fat-soluble vitamins ( D and A ), as these are stored by the body for longer than the water-soluble vitamins.
Vitamin B 2 was tentatively identified to be the factor necessary for preventing pellagra, but that was later confirmed to be due to niacin (vitamin B 3) deficiency. The confusion was due to the fact that riboflavin (B 2 ) deficiency causes stomatitis symptoms similar to those seen in pellagra, but without the widespread peripheral skin lesions.
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