For centuries people have been looking for cures for various diseases in
the nature. Living organisms have been used for various types of treatment
since ancient times. Special kinds of worms, leeches, bees, earthworms gut, and
fish have proven their usefulness in many chronic diseases. Treatment with
respective animals or their products have a lot of advantages because they cause
minimal side effects, toxic and allergic reactions are rare; contraindication for
their use are well-known; and consequently a number of indications is growing.
However, there are some problems regarding the cultivation process of the
living organisms and the complicated method of their application in humans.
Positive results from investigations of the application of living organisms in
different chronic diseases lead to an increased application of this form of treatment
in all parts of the world