McCormick (a popular food product company) lists the ingredients for its celery flakes as "stalk and leaf" of the celery plant. I highly doubt a toxic leaf would have been approved to be sold as a spice. A small number of misinformed people are going around spreading this silly rumor. Celery is edible, root to tip.
Yes it can.
Yes, it is toxic if too much is given.
yes
Just cook enough for whoever you're serving.
No, but too much of them can cause colic.
In theory, I suppose so. But that's not too realistic.
too much salt is not good,urea is toxic
Yes, it's toxic. You could die if you had too much
Yes, as it is a toxic and fowl smelling gas
toxic alge, too much sun light,
Yes some vitamins are toxic and can lead to death if too much is consumed
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