Endogenous Opioids

<p>Introduction to the volume: The Journey Ahead.- The Foundational Science of Endogenous Opioids and Their Receptors.- Interactions Between Endogenous Opioids and the Immune system.- The Opioid Growth Factor in Growth Regulation and Immune Responses in Cancer.- Role of Endorphins in Breast Cancer Pathogenesis and Recovery.- Modulatory Processes in Craniofacial Pain States.- Enkephalin Rescues Temporomandibular Joint Pain Related Behavior in Rats.- Endogenous Opioids and Exercise-Related Hypoalgesia: Modern Models, Measurement, and Mechanisms of Action.- Pain, Fear, Anxiety, and Stress: Relation to the Endogenous Opioid System.- The Roles of Endogenous Opioids in Placebo and Nocebo Effects: From Pain to Performance to Prozac.- Physical Exercise as an Intervention for Depression: Evidence for Efficacy and Mu-Opioid Receptors as a Mechanism of Action.- The Endogenous Opioid System as a Pathway of Positive Emotions.- Endogenous Opioids and Volunteering: On the Evolutionary Significance ofHelping Others.- Endogenous and Exogenous Opioids: Role in Substance Use Disorders.- Endogenous Opioid Activity as the Mechanism of Action for Mitragyna Speciosa (Kratom): The Current State of the Evidence.- Endogenous Opioids in the Homeostatic Regulation of Hunger, Satiety, and Hedonic Eating: Neurobiological Foundations.- Role of Endogenous Opioids in the Pathophysiology of Obesity and Eating Disorders.- Integration of Endogenous Opioid System Research in the Interprofessional&nbsp; Diagnosis and Treatment of Obesity and Eating Disorders.- The Role of Endogenous Opioids in Cardioprotection.- Endorphins, Sexuality, and Reproduction.- Depression, Cancer, Inflammation, and Endogenous Opioids: Pathogenic Relationships and Therapeutic Options.</p>