Jerzy Zieba had worked for over 20 years on natural therapies, especially on natural means of preventing and curing cancer and other chronic illnesses.
Hidden Therapies is based on many years of careful investigation into the medical research literature, much of which is barely know even among doctors.
Jerzy Zieba writes for the press and gives lectures on simple yet effective methods of preventing diseases without the use of synthetic drugs. He is certified as a clinical hypnotherapist in Australia and United Sates.