Medical research shows that hirudin contained in the saliva of bloodsucking leeches not only has the traditional functions of anticoagulation, thrombolysis, anti-inflammation, lowering blood fat, reducing blood viscosity and cleaning up blood waste, but also has the functions of dilating peripheral blood vessels, accelerating blood flow, improving blood circulation and promoting metabolism. Hirudin is the strongest natural antithrombin among the known substances found in the world so far, which has a miraculous effect on human cardiovascular and cerebrovascular diseases, especially cerebral thrombosis. For healthy people, letting leeches "bite" and "kiss" can improve their own blood circulation, clean blood, promote metabolism, and prevent and reduce various diseases or sub-health conditions brought about by modern fast-paced life.
At present, the quality of running water is not only used to remove venous congestion of skin flap after operation, to treat thick traumatic ulcer and to protect the replanted wound of severed limb, but also to develop a variety of health care functions such as treating alopecia, chronic arthritis, numbness of hands and feet, hemiplegia, stroke and postoperative stability. Even in China and parts of South Asia and Southeast Asia, leech biotherapy has gradually become a new health care and treatment method.