How to breed leech? what to feed them and how to take care?

Question

how to breed the leeches in a aquarium so as for making them to be used in hospitals instead of roaming in forest? leeches have been found to be very useful in many sorts of diseases since years but present era getting non poisonous leeches is difficult. so how to breed themso as to use them whenever in need.

Answer 1

Collect from swamp.  Let them suck your blood.

Leeches are not poisonous.