Who Can Perform Leech Therapy?

Official Gazette of the Republic of Turkey, Issue: 29158, 27th October 2014, Regulation of Traditional and Complementary Medicine Practice, by Ministry of Health.
Article 9: Applications may be performed in units and medical centers authorized by the Ministry of Health and by physicians who have a “certificate of application” in the relevant field.

If the leech therapy is carried out by doctors in centers approved by the Ministry of Health, you can safely undergo this treatment.