For many years, Hannes Jacob has made himself available to the medical community for analysis of his cerebral frequencies which occur during his energy healings, in order to attempt to analyze and explain the results obtained by his various healing techniques.

In 2018, he conducted two studies supervised by medical doctors in order to demonstrate the success of the EPI method for the treatment of pollen and grass allergy (hay fever) and/or for the treatment of dairy product intolerance (lactose intolerance or milk allergy), on the one hand, and another study aiming to analyze the success rate achievable by therapists trained in the EPI method by Hannes Jacob.