What multidisciplinary field includes both medical and mental health professionals who investigate psychological factors in the symptoms, etiology, and treatment of physical illness and chronic disease?

Behavioral medicine

Explanation:

Behavioral medicine is the interdisciplinary field worried about the advancement and reconciliation of conduct, psychosocial, and biomedical science information and strategies important to the comprehension of health and ailment, and the use of this information and these systems to anticipation, finding, treatment, and recoveryCustomers and a wide variety of health experts are engaged with conduct medication research and work on, including cardiologists, advisors, disease transmission specialists, practice physiologists, family doctors, health teachers, internists, attendants, nutritionists, pediatricians, therapists, and analysts. Social medication adopts a life expectancy strategy to health and medicinal services, working with kids, adolescents, grown-ups, and seniorsHence, the right answer is "behavioral medicine is used to investigate psychological factor in chronic disease"