STEM-H for Mental Health Clinicians is a textbook for clinical students and postgraduate practitioners who work as medical team members or independent practitioners. Scientific concepts of each bodily system are introduced using a scientific, technological, engineering, mathematical model applied to the client's health (STEM-H). Signature illnesses and injuries, technological apparatuses, and biomedical engineering of medications that treat these conditions are thoroughly explained. Mathematics are applied to determine prevalence and incidence of the illnesses or injuries in the U.S. and globally.