Medicinal leech therapy (MLT) or hirudotherapy is a kind of complementary and integrative treatment method applied with blood-sucking leeches. One or more leeches are attached to the skin of problematic area and the purpose is to gain potential utilities of leech saliva that is secreted while the leeches are feeding.

The Persian Medicine (PM), which is called Unani Medicine in some countries, is a school that views the world as a good and seeking discipline created by the wise and omniscient Almighty. PM consists of the sum total of all the knowledge and practices used in diagnosis, prevention and elimination in Persia from ancient times to present. It is based entirely on practical experience and observations passed down from generation to generation.

Mizaj Research Project is an international research Website which has been organized with the efforts of a number of researchers interested in the scientific development of Persian (Unani) medicine. Following the programs of this website, researchers interested in the subject of Mizaj, can get acquainted and help each other in producing appropriate documents in the field of Mizaj. It is also a platform for sharing Idea between researchers in the field of Mizaj surveys.