the problem is: everything is toxic, it all depends on how much of it you come to contact with,
in a closed space dioxide carbon kills you way before you run out of oxygen, yet we enjoy it in our fizzy drinks.
iron catches fire with enough oxygen, the same thing we breath in every second.
you might eat a banana to benefit from the potassium, but in high concentrations it explodes when it come in contact with water, it's radioactive too.
there are cases of athletes dying because they drank too much water.
the hot taste of capsicum(chili peppers) comes from the pesticide, this kind of plants produce, and we love having some of this pesticide in our food because it kills bacteria and mold, keeping our food edible for longer.
dose makes the poison.