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Autolyzed Yeast Extract is permitted by the US FDA. Several countries restrict, warning-label, or have reviewed it for safety concerns. The US has more lenient additive rules than the EU, UK, Canada, and Japan, which is why this ingredient remains widely used here.
Autolyzed yeast extract naturally contains glutamate, the same amino acid in MSG. Individuals who report sensitivity to MSG may experience similar reactions to autolyzed yeast extract. Because it is a natural product, it does not require MSG labeling under FDA rules, which critics argue is a form of deceptive labeling. In 2002, the FDA rejected a petition to require 'contains glutamates' labeling for yeast extracts. It is high in sodium and not suitable for yeast-sensitive individuals.
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