Quick Answer Health psychologists study how mental, emotional, and social factors affect physical health. To become one, you’ll need a doctoral degree (PhD or PsyD) in health psychology or clinical psychology with a health focus, complete 1,500-2,000 supervised clinical hours, and pass state licensing exams. Clinical psychologists in healthcare settings earn mean salaries ranging from $106,410–$136,500 depending on setting. Every … Continue reading How to Become a Health Psychologist: Degrees, Salary & Career Paths