Psychoneuroendocrinology

In this chapter, psychoneuroendocrinology is defined and explained, and the relevance of this scientific discipline for psychosocial and psychotherapeutic practice is made clear. The interactions between psyche, neurobiology, endocrinology, and the autonomic nervous system are demonstrated, and the enormous importance of hormones for the human psyche is made understandable. This chapter makes it clear that human behavior becomes more explainable through an increasing willingness for interdisciplinary considerations and that research benefits when various disciplines engage in interdisciplinary exchange. Therefore, several sciences are also illuminated, and disciplines relevant to this topic are explained, such as (behavioral) genetics, psychoneuroimmunology, and chronobiology. Furthermore, mental illnesses are presented in which findings from psychoneuroendocrinology are of particular relevance. Additionally, nutrition is discussed, specifically which co-factors and precursors are needed to promote the synthesis of the so-called “happiness hormones.” Ultimately, it becomes clear how the findings of psychoneuroendocrinology can be transferred into psychosocial and psychotherapeutic practice.