Book in Polish by Jerzy Zięba. Jerzy Zięba has been dealing with naturotherapy for over 20 years, especially in relation to natural methods of treatment and prevention of chronic diseases and cancer. The book Hidden Therapies was written after many years of analysing medical research or other publications, which are completely unknown even in the medical community. The author publishes articles in the press, as well as lectures on simple and effective methods of treatment and disease prevention without the use of artificially synthesised agents. He is a certified clinical hypnotherapist in Australia and the USA. (...) thanks to the exceptional talent of the 'searcher: Author, we get a well-documented position, rich in highly relevant but scantily ignored research findings. The narrative is not based on conjecture, unproven reports or wishful thinking. In a sense, it is the fruit of research work conducted and collected in various corners of the world, given to the reader in such a way that the reading is intriguing from the first page to the last. Doctor Med. Rafał Baran