Rhubarb
Rhubarb may be a common dessert vegetable used in crumbles, pies and other sweet treats, but parts of it are actually poisonous.
The rhubarb plant’s pink-red celery-like stalks which many people boil down with sugar to create delicious desserts.
However, rhubarb’s leaves are very poisonous and can even cause kidney failure in humans.
Rhubarb leaves are inedible as they contain a high quantity of oxalic acid which is a natural substance found in other vegetables, fruits, nuts and seeds.
Too much of this acid in the human body can lead to the formation of kidney stones and eventually kidney failure.
Other symptoms of rhubarb leaf poisoning include vomiting and diarrhoea.
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