thumb|336x336px|The Amanita muscaria mushroom, an iconic toxic mushroom.
A toxin is a poisonous substance produced by living organisms—such as mushrooms, plants, animals, or bacteria—that can cause harm or illness to other organisms that are exposed to it. Toxins matter because they pose real health risks to humans and other creatures, making it important to identify and avoid them in food, the environment, and everyday products.
AI-generated from the Wikipedia summary — may contain errors.
thumb|336x336px|The Amanita muscaria mushroom, an iconic toxic mushroom.
A toxin is a naturally occurring poison produced by metabolic activities of living cells or organisms. They occur especially as proteins, often conjugated. The term was first used by organic chemist Ludwig Brieger (1849–1919), derived from toxic.
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