Health psychology concentrates on promoting well-being, preventing, and treating diseases. It also explores how individuals respond to, manage, and recover from illness. Health psychologists also focus on enhancing healthcare systems and government health policies.

Division 38 of the American Psychological Association is dedicated to health psychology. According to this division, their emphasis lies in gaining a deeper understanding of health and illness, investigating the psychological aspects affecting health, and contributing to healthcare systems and policies.¹

Emerging in the 1970s to meet the evolving healthcare landscape, health psychology addresses contemporary health issues. Presently, the average life expectancy in the U.S. is approximately 80 years, with chronic diseases, often stemming from lifestyle choices, being the primary causes of mortality.² Health psychology serves to address these shifts in health dynamics.

Why is health psychology important?

The significance of health psychology is highlighted by data collected by the National Center for Health Statistics (NCHS) of the Centers for Disease Control and Prevention (CDC), which tracks mortality and its underlying causes. Consistent with trends observed over the past century, nearly half of all deaths in the United States can be attributed to behaviours or other risk factors that are largely preventable.

According to the CDC's 2012 report, mortality rates had declined for most leading causes of death except for suicide. Despite life expectancy reaching a record high of 78.8 years, approximately 83 Americans succumb to heart disease and stroke every hour. Shockingly, over a quarter of these deaths could have been avoided.

Cancer-related fatalities ranked second, with chronic lower respiratory diseases—primarily chronic obstructive pulmonary diseases (COPD) like emphysema and chronic bronchitis—following closely behind. 

The biopsychosocial model of health

In contemporary health psychology, the predominant framework is the biopsychosocial model.³ This model offers a lens for comprehending both mental and physical health by considering multiple systems, including biology, psychology, and the social environment, and their interconnected influences.

• Biological factors encompass inherited personality traits and genetic predispositions
• Psychological factors include lifestyle choices, personality traits, and stress levels
• Social factors involve support networks, familial dynamics, and cultural norms and values

A healthcare approach based on the biopsychosocial model recognizes the interconnectedness and interaction among these systems, influencing an individual's well-being and susceptibility to illness. A deeper understanding of these systems can enhance the effectiveness of treatment interventions.

Contemporary topics in health psychology

Health psychologists collaborate with individuals, groups, and communities to mitigate risk factors, enhance general well-being, and prevent illness. Their work encompasses research and interventions in various domains, such as:

• Stress management
• Facilitating weight management
• Supporting smoking cessation
• Enhancing dietary habits
• Mitigating risky sexual behaviours
• Providing hospice care and grief support
• Preventing illness and exploring its impact 
• Improving recovery
• Educating on coping strategies

What do health psychologists do?

Health psychologists undertake a range of activities centred on health and well-being. Some of their tasks encompass:

Developing and executing programs promoting healthy behaviours like balanced nutrition or regular exercise

• Assisting individuals in giving up smoking 
• Educating on stress management methods
• Supporting those managing chronic health conditions, such as mental health conditions
• Providing insights into the emotional and psychological impact of illness
• Establishing and managing workplace wellness initiatives
• Addressing stress, burnout, and work-life balance issues among employees
• Collaborating with individuals to enhance treatment adherence
• Formulating public health campaigns to prevent or combat illnesses
• Researching various psychological factors' impact on health and illness progression

Additionally, many health psychologists research diverse health-related topics. This may include investigating health problem causes, effective preventive measures, optimal health promotion strategies, pain and illness coping mechanisms, and methods to encourage medical treatment-seeking behaviours.

Divisions within health psychology

Health Psychology encompasses various specialised areas where professionals engage in diverse roles to promote wellness and prevent illness. These areas include:

Clinical Health Psychology: Linked closely with clinical psychology, professionals in this field engage in activities like psychotherapy, behaviour modification, and health education. They conduct assessments, interviews, and interventions in clinical settings, offering guidance on stress reduction, smoking cessation, and healthy behaviour adoption.

Community Health Psychology: Specialists in this domain focus on crafting interventions and prevention strategies at the community level. They assess community health issues, design initiatives, and collaborate with groups to foster healthy behaviours and address concerns.

Public Health Psychology: These practitioners concentrate on understanding health trends at a population level and advise healthcare professionals, government agencies, and educators. They may work in governmental or private agencies, advocating for health policy changes, addressing healthcare disparities, and contributing to reform efforts.

Occupational Health Psychology: This emerging field integrates elements of industrial-organizational psychology to enhance workplace health and well-being. Professionals here examine the links between workplace dynamics and physical and mental health, tackling issues like safety, wellness programs, and managing workplace stress.

Where do health psychologists work?

Health psychologists are employed across diverse environments, including⁴

• Hospitals
• Healthcare clinics
• Corporate sectors
• Academic institutions

Certain health psychologists specialize in specific healthcare domains like oncology, pain management, women's health, and smoking cessation programs. Others serve in governmental roles, overseeing community health initiatives or shaping public policies.

Summary

In summary, health psychology is a vital field focused on promoting well-being, preventing and treating diseases, as well as understanding individuals' responses to illness. Emerging in the 1970s, health psychology addresses contemporary health issues, especially as chronic diseases become primary causes of mortality. The significance of health psychology is evident in data showing preventable factors contributing to nearly half of all deaths in the US. The biopsychosocial model is a key framework that considers biological, psychological, and social factors' interconnected influences on health and illness.

Health psychologists work across various domains, collaborating with individuals, groups, and communities to mitigate risk factors, enhance well-being, and manage illness. They undertake tasks like developing and executing health programs, supporting individuals with chronic conditions, and conducting research on diverse health-related topics.

Specialisations within health psychology include clinical health psychology, community health psychology, public health psychology, and occupational health psychology. These professionals work in diverse settings such as hospitals, clinics, corporate sectors, and academic institutions, addressing specific healthcare needs and contributing to public health initiatives and policies.