Are acorns poisonous?
Acorns contain a substance called gallotannin. In the rumen, gallotannin is metabolized to gallic acid and tannic acid. Tannic acid causes ulceration of the mouth, esophagus, and gastrointestinal tract. Tannic acid is especially toxic to the renal tubules, and renal failure tends to be the hallmark of this disease. In the fall, this substance concentrates in acorns and increases the risk of animal poisoning when acorns are ingested. ChaCha
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Older Answers
No, When native Indians roamed what is now the United States of America, acorns were a staple in their diet from coast to coast. Some can be eaten off the tree after being cooked. ChaCha!
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Yes most. They contain a substance called gallotannin that can be dangerous if ingested. In the fall it is even more concentrated.
Answered by Miriam R. -
Acorns contain a substance called gallotannin. Gallotannin is metabolized to gallic acid and tannic acid which is deadly. ChaCha!
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Acorns contain a substance called gallotannin, which can cause ulceration of the mouth, esophagus, and gastrointestinal tract! Ew!
Answered by Brady P. -
It has been assumed that acorns are poisonous to humans, but many people eat acorns with no apparent ill results. ChaCha on!
Answered by Crystal S. -
Not all are poisonous, some can be eaten off the tree after being cooked. A poison that can be leached out with water and lime.
Answered by Pamela R. -
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