What Is Health Science? An Interdisciplinary Guide to Health, Science, and Well-Being
An interdisciplinary introduction to health science, its major fields, educational pathways, and connections to lifelong learning and well-being.
By CPSWDC
11 min read
Health affects every part of human life. Understanding health therefore requires more than studying disease or medical treatment alone. It involves biology, human behavior, psychology, nutrition, public health, environmental factors, healthcare systems, education, technology, and the social conditions in which people live.
This broad perspective is reflected in health science, an interdisciplinary field that brings together scientific knowledge and health-related disciplines to better understand health, disease prevention, healthcare, human well-being, and population health.
For students, professionals, educators, and lifelong learners, health science can provide a useful framework for understanding how different areas of knowledge connect.
What Is Health Science?
Health science is an interdisciplinary field of study concerned with human health, health promotion, disease prevention, healthcare, and the scientific and social factors that influence well-being.
Health science can include knowledge from areas such as:
biology and life sciences;
anatomy and physiology;
medicine and clinical science;
nursing and allied health;
psychology and behavioral science;
nutrition and nutritional science;
public health;
epidemiology;
environmental health;
health education;
health services and healthcare administration;
health technology and informatics;
rehabilitation and health promotion;
social and behavioral sciences.
Because health is influenced by biological, behavioral, social, and environmental factors, health science is inherently interdisciplinary. NIH describes behavioral and social science research as examining the relationships among biological, behavioral, social, and environmental processes relevant to health.
Genetics can influence biological processes. Nutrition affects physiological functioning. Physical activity influences health and well-being. Psychological experiences can affect behavior and daily functioning. Social relationships, education, employment, housing, and the physical environment can also influence health.
This means that understanding health often requires different professional perspectives.
For example, an investigation into childhood health might involve:
Biology → Nutrition → Psychology → Education → Family → Community → Public Health
Similarly, understanding an aging population might require knowledge of:
Medicine → Rehabilitation → Psychology → Social Services → Nutrition → Public Health → Healthcare Systems
The interdisciplinary nature of health science allows these perspectives to be considered together rather than treating each area as completely separate.
What Are the Major Areas of Health Science?
Health science is a broad field rather than a single profession. Different educational programs and professional organizations may organize the field differently.
Some major areas include the following.
1. Biomedical and Life Sciences
Biomedical science examines biological processes related to health and disease.
Topics may include:
anatomy;
physiology;
genetics;
microbiology;
immunology;
biochemistry;
neuroscience;
pathology;
pharmacology.
These sciences provide important foundations for understanding how the human body functions and how disease develops.
2. Clinical and Allied Health Sciences
Health science also includes many professions involved in healthcare and health-related services.
These may include:
nursing;
physical therapy;
occupational therapy;
speech-language pathology;
medical laboratory science;
radiologic technology;
respiratory care;
nutrition and dietetics;
other allied health professions.
The National Library of Medicine's MeSH vocabulary describes health occupations as professions directed to the cure and prevention of disease, and also provides a separate category for allied health occupations. National Library of Medicine: Health Occupations, MeSH
3. Public Health
Public health focuses on protecting and improving the health of populations and communities.
Unlike clinical care, which often focuses on the health needs of individual patients, public health frequently examines health at the population level.
Public health can include:
disease prevention;
health promotion;
epidemiology;
environmental health;
health education;
community health;
health policy;
biostatistics;
health surveillance.
The National Library of Medicine describes public health as concerned with preventing disease and disability and promoting the physical and mental health of populations. National Library of Medicine: Public Health, MeSH
4. Psychology and Behavioral Science
Health is also influenced by behavior, emotions, cognition, relationships, and social environments.
Health-related behavioral science can examine topics such as:
health behaviors;
stress;
motivation;
health decision-making;
sleep;
social relationships;
adherence to health recommendations;
behavioral change;
psychological factors affecting health.
NIH's behavioral and social sciences research framework specifically examines behavioral and social phenomena relevant to health, including interactions among individuals, families, communities, workplaces, and broader environments.
NIH Office of Behavioral and Social Sciences Research: BSSR Definition
This creates an important connection between health science and mental wellness.
5. Nutrition and Health
Nutrition is another important component of health science.
Nutrition science examines the relationship between food, nutrients, metabolism, growth, development, and health.
Health-related nutrition topics may include:
macronutrients and micronutrients;
dietary patterns;
childhood nutrition;
nutrition across the lifespan;
food and metabolism;
nutritional deficiencies;
nutrition and chronic disease;
public nutrition.
Nutrition should be understood within an evidence-based health framework rather than through unsupported claims about individual foods, supplements, or diets.
6. Environmental Health
The environment in which people live and work can influence health.
Environmental health may examine:
air quality;
water quality;
environmental contaminants;
occupational exposures;
housing conditions;
climate-related health concerns;
community environments;
environmental risk factors.
Environmental health therefore connects health science with biology, chemistry, public health, occupational health, environmental science, and policy.
7. Health Technology and Informatics
Technology has become increasingly important in health research and healthcare.
Health technology and informatics can involve:
electronic health information;
health data;
medical imaging;
digital health tools;
health information systems;
biomedical technology;
data analysis;
artificial intelligence and health research.
These developments create new connections between health science, computer science, engineering, statistics, and data science.
Health Science and the Whole Person
A modern understanding of health cannot be limited to the absence of disease.
Health and well-being can involve physical, psychological, and social dimensions. Research and public-health frameworks increasingly consider how biological characteristics interact with behavior, relationships, communities, workplaces, and physical and social environments.
This broader perspective is sometimes described as a whole-person or population-health approach.
For example, when considering a person's health, it may be useful to ask not only:
What disease or condition does this person have?
but also:
What biological, behavioral, psychological, social, environmental, and educational factors may be relevant to this person's health?
This does not mean that every health question requires every discipline. Rather, it recognizes that complex health questions may benefit from more than one perspective.
Health Science and Mental Wellness
Mental wellness is an important part of the broader health landscape.
Psychology, neuroscience, behavioral science, public health, education, social science, and healthcare all contribute different perspectives to understanding mental and emotional well-being.
For example, stress can be studied from several perspectives:
Neuroscience can examine biological responses to stress.
Psychology can examine cognition, emotion, and coping.
Behavioral science can examine changes in behavior.
Public health can examine patterns of stress across populations.
Education can examine the relationship between learning environments and student well-being.
Social science can examine how relationships, communities, work, and social conditions influence health.
This interdisciplinary approach helps explain why health science can provide a useful framework for understanding the connection between physical health, mental wellness, behavior, and environment.
Why Health Science Matters for Students
Health science can be particularly valuable for students who are interested in healthcare but have not yet decided which professional direction to pursue.
Exploring health science can introduce students to different fields, including:
medicine;
nursing;
psychology;
public health;
nutrition;
biomedical research;
rehabilitation;
healthcare administration;
health education;
environmental health;
health technology.
Students can use interdisciplinary learning to explore their interests before making decisions about future education and professional training.
It is important, however, to distinguish exploring a health science field from becoming qualified to practice a regulated healthcare profession. Many health professions have specific educational, licensing, registration, or certification requirements.
Health Science and Professional Development
Health science is not relevant only to students.
Professionals may encounter health-related knowledge in many different fields.
For example, educators may benefit from understanding child development and health education. Technology professionals may work with digital health systems. Researchers may collaborate across biomedical and behavioral disciplines. Community organizations may work on health education or wellness initiatives.
This creates opportunities for cross-disciplinary professional development.
A professional does not necessarily need to become a healthcare practitioner to develop a meaningful understanding of health science. Depending on the person's role, health-related knowledge may complement existing professional skills.
Health Science and Workforce Development
Health science is also connected to workforce development.
The health workforce includes a wide range of roles, from clinical and allied health professions to public health, research, education, administration, technology, and community-based work. Health professionals do not all perform the same functions, and the broader health system depends on different areas of knowledge and expertise.
This creates multiple educational and professional pathways.
Some health-related occupations require advanced degrees and professional licensing. Others have different entry requirements and training pathways.
Understanding these distinctions can help students and professionals make more informed decisions about education, training, and career development.
Health Science Is Not the Same as Medicine
A common misconception is that health science and medicine are the same thing.
They are related, but they are not identical.
Medicine is a healthcare discipline focused on the prevention, diagnosis, treatment, and management of illness and disease.
Health science is broader and interdisciplinary. It can include medicine but also encompasses areas such as public health, nutrition, psychology, health education, biomedical research, environmental health, health technology, and health services.
This distinction is particularly important for students exploring educational pathways.
Studying health science does not automatically qualify someone to practice medicine or another regulated healthcare profession.
How Can Someone Learn About Health Science?
Health science can be explored through many forms of learning, depending on a person's goals.
These may include:
introductory educational courses;
university or college programs;
professional workshops;
continuing education;
public-health resources;
scientific literature;
research activities;
interdisciplinary seminars;
professional organizations;
community learning;
independent study.
When evaluating a health-related educational opportunity, consider the purpose of the program, the qualifications of the instructors, the evidence supporting the material, and whether the activity provides formal academic credit or professional credentials.
A workshop designed for general education should not be confused with a program that qualifies someone for professional practice.
How Can Health Science Support Lifelong Learning?
Health science is a field that continues to evolve.
Scientific research produces new knowledge. Technology changes how health information is collected and analyzed. Public-health priorities change. New healthcare models develop. Understanding of behavioral and social influences on health continues to expand.
For this reason, health science provides an excellent example of why lifelong learning matters.
People do not need to become experts in every area of health science. Instead, they can develop the ability to:
ask informed questions;
evaluate health information critically;
understand basic scientific concepts;
recognize the limits of evidence;
connect knowledge across disciplines;
distinguish education from professional practice;
continue learning as knowledge develops.
These are valuable skills for students, professionals, educators, and community members.
CPSWDC and Health Science
The Canadian Professionals and Skilled Workforce Development Centre (CPSWDC) was founded in 2005.
CPSWDC's core activities include membership, workshops, professional development, community engagement, networking, collaboration, and interdisciplinary learning.
Health science is one of the interdisciplinary educational areas that can connect these activities. Through educational content and professional learning opportunities, health science can provide a bridge between scientific knowledge, health-related professions, mental wellness, education, and community learning.
CPSWDC's role is to create opportunities for people to learn, exchange knowledge, explore professional interests, and connect with others across disciplines. It is not a healthcare provider, medical school, licensing authority, or regulatory body.
Participation in a CPSWDC workshop or educational activity does not by itself provide a healthcare professional license, medical qualification, academic degree, or professional certification unless a specific program is formally identified as providing such a credential.
Key Takeaways
Health science is an interdisciplinary field concerned with human health, disease prevention, healthcare, and well-being.
Health science can include biomedical science, clinical and allied health, public health, psychology, behavioral science, nutrition, environmental health, and health technology.
Health is influenced by biological, psychological, behavioral, social, and environmental factors.
Public health focuses particularly on protecting and promoting health at the population and community level.
Health science and mental wellness overlap through psychology, neuroscience, behavioral science, public health, education, and social factors.
Health science can provide students with opportunities to explore different health-related educational and professional pathways.
Professionals can use health science knowledge as part of interdisciplinary and lifelong learning.
Health-related professions have different educational, licensing, certification, and training requirements.
Health science is broader than medicine and should not be confused with qualification to practice a regulated healthcare profession.
For CPSWDC, health science represents an interdisciplinary educational and professional-development area that connects learning, workshops, professional development, networking, collaboration, and community engagement.
Educational Note
This article is intended for general educational and professional-development purposes. It does not provide medical diagnosis or treatment and does not replace advice from a qualified healthcare professional. Educational and professional requirements vary by occupation and jurisdiction; individuals considering a healthcare career should consult the relevant educational institution, professional organization, licensing authority, or regulatory body for current requirements.
