The basic principle of toxicology is that everything is toxic. It comes down to a question of dose and duration. This is true for every substance, whether it is water or mercury, drink 6 litres of water in less than 30 minutes and you die, take a tiny amount of mercury and you die.
True. The dose makes the poison. But the same reasonable quantity of a given food can be "toxic" for one person and "healthy" for another. The most relevant factor here isn't dosage per se, but nutritional genetic compatibility.
Yes, I agree!