What is the difference between edible mushrooms and poisonous ones?

All mushrooms are called conditionally edible, because they have a different effect on each organism. Edible mushrooms can be eaten by humans, because they do not contain toxic substances that adversely affect the body. There are many types of edible mushrooms: honey agarics, porcini mushroom, boletus, chanterelles, truffle. Poisonous mushrooms, unlike edible ones, can lead to human death, because they contain harmful substances. Poisonous mushrooms include: pale toadstool, fly agaric, gall mushroom, fat pig.