- Open Access
Developing and implementing core competencies in children’s environmental health for students, trainees and healthcare providers: a narrative review
BMC Medical Education volume 21, Article number: 503 (2021)
Knowledge of the health impacts of environmental exposures (such as pollution disasters, poor air quality, water contamination, climate change) on children’s health has dramatically increased in the past 40 years. The World Health Organization (WHO) estimated that 23% of all deaths worldwide were attributable to the environment, and 26% of deaths in children less than 5 years old could be prevented with removal of environmental risks factors. Yet, little has permeated medical education, leaving pediatric providers ill equipped to address these issues. To address this gap, members from the Pediatric Environmental Health Specialty Units, a United States nationwide network of academically affiliated experts who have created numerous environmental health educational materials and programs, have identified fifteen core environmental health (EH) competencies needed by health care providers to enable them to effectively address environmental health concerns. These competencies can serve as the foundation for the development and implementation of relevant educational programs. The core EH competencies are based upon these foundational elements: 1) Definition of “children’s environmental health” that describes how environmental exposures (positive and negative) in early life influence the health and development in childhood and across the entire human life span 2) Children are not “little adults” and so have unique vulnerabilities to environmental hazards; 3) Environmental health inequities exist, causing some children to have a disproportionate amount of unhealthy exposures and consequently a greater risk of adverse effects; 4) Climate change will translate to numerous adverse health effects that will particularly affect children worldwide. In this article, the authors describe the core environmental health competencies and provide resources, online tools, strategies, and examples targeted to all levels of training and practice to better enable leaders and educators to bring this important content to the forefront.
Pollution disasters, particularly since the 1980’s, have brought greater attention to the effects of environmental contamination on communities and children. The world’s largest industrial accident, the Union Carbide plant methyl isocyanate gas leak in Bhopal, India in 1984, sent 170,000 people to the hospital, with estimated deaths as high as 8000, including 3000 in those less than 15 years of age, and caused severe health effects in 13,000 small children . In the United States, communities living near hazardous waste sites, such as “Love Canal,” raised concerns about adverse impacts to their children from chronic exposure to polluted environments and toxicants, and formed advocacy groups . An appreciation grew that children may be more vulnerable to toxic environments due to greater opportunities for exposures (given their lower breathing zone, oral exploratory and other behaviors), greater physiological impacts and potential for delayed manifestations [3,4,5,6]. A World Health Organization (WHO) 2016 report noted that 23% of all deaths worldwide were attributable to the environment, and 26% of deaths in children less than 5 years old could be prevented with removal of environmental risks factors . Children in industrializing (Low-and Middle-Income Countries, LMIC) suffer from both the traditional environmental health risk factors and diseases (such as indoor air pollution from solid fuels and contaminated water leading to diarrhea, pneumonia and infectious diseases) along with some hazardous exposures more associated with high income countries (HIC) [7, 8]. For example, children in LMIC’s are now exposed to higher levels of outdoor air pollution due to increased combustion of fossil fuels from growing industrial activities and car exhaust accompanying increased car ownership, as well as exposures to metals, e-waste, pesticides, inadequate water availability and quality, and extreme pollution events [7, 9, 10]. Environmental problems for children of HIC’s tend to be linked to chronic, non-communicable diseases that are increasing, such as asthma, neurodevelopmental disorders (dyslexia, attention deficit/hyperactivity disorders, autism), childhood obesity, and cancer (leukemia, brain) [3, 4, 7, 8, 11,12,13,14]. For all children, there are concerns regarding the relationship of environmental factors and the COVID-19 pandemic , impacts of climate change [16,17,18], and exposure to manmade ubiquitous long lasting chemicals, such as per- and polyfluoroalkyl substances (PFAS) found in contaminated water and consumer products [19,20,21].
Children in more low income and minority areas in HIC’s and LIMC’s experience inequalities related to environmental exposures and subsequent adverse outcomes . In the United States, the environmental justice movement raised public awareness about inequities of pollution, racism and effects on communities and children [23, 24]. These forces helped to stimulate the 1997 Executive Order “Protection of Children from Environmental Health Risks and Safety Risks” which charged U.S. federal agencies to consider and address environmental risks to children . In 1998 the Agency for Toxic Substances Disease Registry (Centers for Disease Control and Prevention), an agency tasked with assessing, reducing, and preventing hazardous exposures at Superfund sites, established the Pediatric Environmental Health Specialty Units (PEHSUs). The PEHSUs are a network of experts who provide consultations (telephone and clinic), education, and referral services for reproductive and children’s environmental health (EH) . Further supported by the United States Environmental Protection Agency (USEPA), there are now 10 PEHSU sites across the United States [27, 28]. Comparable entities have been developing in some other countries as well .
The concept of children’s environmental health has grown beyond exposures from nearby toxic external environments to encompasses those aspects of children’s health, including quality of life, that are determined by interactions with physical, chemical, biological and social factors in the environment . The field focuses on environmental exposures that span the period from parents’ pre-conception through pregnancy, infancy, childhood, and adolescence. It includes inhaled air, as well as ingested water and food, housing conditions, consumer products, e-waste and other materials encountered in one’s built or social environments as well as the effects of climate change.
It is imperative that clinicians taking care of children and pregnant women, whether in HIC’s or LMIC’s, improve their environmental health literacy, access and utilize existing resources that address factors in their relevant environments, be able to take an environmental history, give anticipatory guidance, and in some cases, act as a resource for their communities [3, 7, 30]. The American Academy of Pediatrics (AAP) developed the Council On Environmental Health to address the effects of radiation, chemicals and environment in general, and has created important publications . WHO has created training modules related to children’s exposures to various agents, such as heavy metals, radiation, and noise, and ones that address broader environmental health topics such as developmental and environmental origins of adult disease and the pediatric environmental history . The US EPA and National Institute of Environmental Health Sciences (NIEHS)-sponsored Children’s Environmental Health Research Centers have expanded the scientific evidence base of children’s unique vulnerability to environmental toxicants .
Despite these efforts, deficiencies have been reported and still exist in the training of physicians and other health care providers regarding environmental health factors, starting at the medical school curriculum level [33,34,35,36,37], and extending to those in practice. For example, pediatricians surveyed in the U.S. state of Georgia in 2002 reported that they strongly believed in the importance of environmental exposures in children’s health, yet less than one in five received training in taking the environmental health history . Similarly, pediatric oncology providers at a variety of U.S. sites rarely take a history about environmental exposures and are uncomfortable answering questions about them from their patient’s families . In a study of 72 Egyptian pediatricians attending two education sessions 1 month apart, over half reported some awareness of pediatric health topics, but very low appreciation of the value of the environmental health history in practice . A post education intervention survey revealed a higher proportion were including questions about environmental toxic exposures and parents’ occupation in the medical history and revealed the need for further awareness and attention to pediatric environmental health issues in practice .
Our paper addresses this education gap by first identifying core competencies needed by health care providers to enable them to effectively address EH concerns and issues (Table 1). These EH competencies can then serve as the foundation for development and implementation of relevant educational programs, targeted to all levels of training and practice, and to location priorities. The EH competencies in the areas of foundational knowledge, patient care and community health are reflective of established core competencies in medical education that address population health, including social and environmental determinants of health, community health, and health disparities . We also provide examples and resources to assist in fulfilling these competencies that can be applied at various levels of training and practice.
Foundation of the core competencies in children’s environmental health
A committee of pediatric environmental health experts from the PEHSU network developed core competencies in children’s environmental health, based upon these foundational elements:
Definition of “children’s environmental health”
Children’s environmental health has been defined as “the academic discipline that studies how environmental exposure in early life--chemical, nutritional, and social--influence health and development in childhood and across the entire human life span” . Environmental health in clinical practice involves diagnosis, treatment and prevention of illnesses associated with harmful exposures in the environment, but also encompasses fostering the healthy aspects of an environment that are important for a child’s development, such as opportunities for exercise and the safe exploration of surroundings and nature [3, 42]. There is also growing evidence that social stressors can act synergistically with chemical exposures to harm children’s health and development [43, 44]. Environmental exposures are relevant not only to general pediatrics but also to subspecialties such as pediatric nephrology, cardiology, neurology/developmental, pediatrics pulmonary and oncology [45,46,47,48].
Children have unique “vulnerabilities” to environmental hazards, that vary with their developmental stage, behavior, and types of activities, and involve such factors as routes of exposure, metabolism, oxygen consumption, respiratory rates and target organ susceptibility and developmental “windows of vulnerability” [3, 4, 12].
Environmental justice and health inequities
Some children have a disproportionate share of unhealthy exposures in their environment, and consequently a greater risk of adverse effects [22, 23]. Many of these children lack access to healthy homes and physical environments (some resulting from historical discriminatory practices), as well as enriched and supportive social environments that would contribute to healthy development. Environmental justice and health inequalities is a global problem . These children, who are confronted by the cumulative impacts of unhealthy exposures and limited services, face barriers in overcoming these exposures, and consequently suffer negative health outcomes .
Climate change and children’s health
Climate change is bringing about different changes in different regions of the globe that will translate to numerous adverse health effects as the results of disasters, increased heat stress, worse storms, floods, draught, decreased air quality, food and water shortages, and psychological stress, and children will be particularly vulnerable to these threats [16, 17, 51, 52]. Pediatricians can play an important role as protectors of the health and safety of children, and as advocates for changes that address both the mitigation and adaptation to climate change [17, 53, 54] . Climate change has been highlighted as an important topic for medical school and residency curricula [55,56,57].
In consideration of these factors, Table 1 presents proposed competencies in the categories of medical knowledge, patient care, and systems-based practice (community health).
Environmental health resources and experiences that fulfill the core competencies
In the last decade, more educational materials, clinical experiences, and online tools related to pediatric environmental health have been developed to fulfill EH competencies. These resources have contributed to the education of medical students, nurses, health professionals, trainees and providers, and serve as models for the development of future experiences and materials (Table 2: Resources). The following is a brief description of some of these pediatric EH resources and initiatives.
Health care providers can access online tools, even during a patient encounter, such as the Pediatric Environmental Health Toolkit (PEHT), endorsed by American Academy of Pediatrics (AAP) . This resource provides succinct evidence-based information which includes provider and patient educational materials tailored to developmental stages. One hundred pediatric providers and trainees who were trained to use the PEHT in different primary care settings, reported substantial improvements in provider knowledge and confidence with counseling about EH issues. After 6 months of use, most participants responded that they “intended to continue to use the materials,” (96%) and advise patients on environmental health issues more often (86%). The original PEHT has been converted to a web-app for wider availability. Of the more than 13,000 users over the past 2 years (August 2019–2021), greater than 500 were from 60 countries outside of North America, indicating a broad international interest in these kinds of products.
In 2019 AAP released the 4th edition of the “Green Book” Pediatric Environmental Health, in both paper and electronic versions, which provides practical information for both clinical care, patient education, and teaching . Galvez and Balk provide an outline of select environmental health priority areas for clinicians, along with key environmental health questions and messaging that can be incorporated into appointments .
The Pediatric Environmental Health Specialty Unit (PEHSU) web site offers free access to numerous resources (fact sheets, webinars, electronic eLearning modules), some translated into other languages, as well as contact information to regional experts . As of August, 2021, the PEHSU National Classroom, launched in 2015, has provided 99 webinars and 26 eLearning modules, covering many of the core competencies. Over 21,000 participants (from the U.S, Canada, Israel, Australia, India and Spain), including nurses, residents, practitioners from pediatrics, family medicine, toxicology, emergency medicine, obstetrics/gynecology, medical and nursing students, paramedics, pharmacists and others have completed post-test assessments, which consisted of at least 5 questions (multiple choice and true/false) based on the learning objectives for each activity, with 80% receiving a passing score of 80% correct. For 12 interactive modules, 994 participants (representing various levels of physicians and students and non-clinical professionals) completed pre-tests and post-tests questionnaires on at least one module (5–15 multiple choice or true /false questions) . Post-test scores were significantly higher than pre-test scores, demonstrating an improvement of 30.74%. There was a small response to a 6-month post-test survey, and so this assessment was not possible to determine the actual clinical impact of the eLearning modules on actual clinical practice .
Medical institutions such as University of California San Francisco (UCSF), Harvard Medical School (HMS), and the Icahn School of Medicine at Mount Sinai (ISMMS) offer EH electives that provide experience with the prevention, diagnosis, and management of EH concerns in the clinical and community settings. The Western States PEHSU (WS-PEHSU) developed an Interactive Pediatric Environmental Health Curriculum, an easy to administer environmental health curriculum, which meets ACGME requirements, is adaptable to multiple educational sites, and does not require expertise in environmental health to administer (a comprehensive faculty guide is provided) . It includes three modules: a neighborhood visit to explore community environmental factors, a home visit to explore the intersection of housing and health, and a critical evaluation of information in a mainstream publication. The New England PEHSU developed a case-based interactive lecture on pediatric environmental health that was given at Simmons School of Nursing, and then developed into an online module for their students. The ISMMS elective has adapted to offer a virtual elective experience during the COVID-19 pandemic, including telephone screening of high-risk patients for environmental and social determinants of health.
Narrative approaches and storytelling are powerful health promotion tools that can increase understanding of determinants of health, translate complex science, and improve care. A Story of Health (SOH), a multimedia eBook, harnesses the power of storytelling to improve environmental health literacy for health professionals, health educators and advocates . It addresses multiple environmental contributors to health and illness and their interactions across the lifespan in chapters on asthma, developmental disabilities, childhood leukemia, infertility/reproductive health, and cognitive decline. By grounding the science of health in stories of fictional people, their families, and communities, readers can explore risk factors and prevention strategies. Chapter stories address environmental justice and communities of color to encourage and improve “culturally responsive care.” The eBook is intended to foster the use of anticipatory guidance around environmental exposures in clinical and community practice. Over 16,000 health professionals have registered through the CDC for free CE credits using the Story of Health module. In the feedback survey, more than 85% of users have reported they will incorporate the information into their practice and provide interventions . SOH has been adapted for use in clinical education of doctors, nurses and public health professionals.
Strategies to build competence
It would be unrealistic to expect every graduating medical/health professional student and practitioner to be an expert in environmental medicine. However, by introducing key EH topics in a more substantial way during pre-clinical and clinical years for trainees, and through continuing education for practitioners, healthcare providers could become better prepared to address parent and patient concerns, access EH resources, address exposures, and provide anticipatory guidance on EH. Given the climate crisis, and its multiple effects particularly on children, it is imperative for institutions training health professionals to increase their educational initiatives related to climate change [55, 57, 62] The following are some examples of existing strategies for integrating EH that can increase foundational knowledge, enhance clinical skills, and address community health concerns.
Preclinical foundational coursework: Integrate EH topics into relevant existing curriculum sessions and associated assessment (e.g. written examinations, problem-based learning exercises). Some examples include a discussion of environmental triggers and air pollution’s impact on lung development in pulmonology sessions on asthma, discussion of endocrine disrupting chemicals in relevant endocrinology course, and discussion of climate change-related expanding range of vector-borne diseases in infectious disease courses.
Clinical clerkships and residency training: Medical schools and residencies have begun to incorporate social determinants of health and advocacy training in clerkships and residencies across specialties [63,64,65]. EH (including environmental justice) is an important component to include among the social determinants and can be a focus for advocacy training and case studies. For clerkships and residencies, it is important to teach fundamentals, such as taking an environmental history and a targeted environmental history for key conditions such as asthma (environmental triggers) and lead poisoning. Standardized patient (SP) cases and assessments could be created that include contributing environmental factor that could be relevant to that location. In one example, a SP case used in a medical student clerkship involved a person with asthma exacerbation triggered by wildfire, which stimulated increased awareness of health impacts of climate change on individual patients, and connections to public health actions such as mitigation and adaptation .
For residency, EH topics could be included in numerous ways, incorporating case studies into Morning Report, ambulatory wrap up rounds and other resident educational sessions. Philipsborn et al.  provide a comprehensive framework for how to include relevant climate change topics into residency education. Such a framework could be applied to other EH topics. Clinical preceptors can encourage the inclusion of environmental histories as routine part of patient care, both as part of diagnostic reasoning as well as for preventive care (example: screening for radon).
Curriculum enhancement for medical (and other health profession) students. Medical Centers with established EH expertise and faculty, can create and offer EH electives for medical students or residents (example curricula are available). The centers can also provide opportunities for students to get involved in EH research or service projects, participate in rotations with clinical or environmental public health faculty. For Centers without an EH program, encourage trainees to participate in away electives, rotations or projects at established programs as offered, for example, through the PEHSU network. Trainees and providers can join committees or working groups based in a professional organization (e.g., AAP Council on Environmental Health) or through their local institutions (e.g., Social Determinants of Health Committee).
Postgraduate training opportunities: A Pediatric Environmental Health Fellowship is available at several institutions [26, 67]. Additional training opportunities exist for non-physician allied health professionals, such as the Association of Schools & Programs of Public Health Environmental Health Fellowship Program (ASPPH/USEPA  and the Environmental Health Nurse Fellowship .
Continuing Medical Education (CME) and Maintenance of Certification (MOC) for practicing clinicians, and other Continuing Education requirements: Practitioners in various aspects of patient care are usually required to perform continuing education. EH topics could be incorporated into local “Grand Rounds”, departmental lectures, professional conferences, and online continuing education learning modules. For example, providers can access and participate in existing CME events and modules as provided on the PEHSU national classroom . In the U.S., pediatric organizations can offer MOC Part 2 or Part 4 credits that focus on EH issues. The AAP offers EH-related Project ECHO (Extension for Community Health Care Outcomes) Series.
Clinical tools available to help integrate EH into routine patient care: Providers can utilize existing tools to enhance capacity to address EH in clinical care (see Table 2). As clinics are beginning to incorporate social determinants of health into the electronic medical record (EMR) [70, 71], efforts could be made to include relevant EH history questions and anticipatory guidance.
Partnerships: It is also possible to leverage relationships with key partner organizations to include EH topics into existing meetings and conferences (e.g., AAP Chapters (USA), State Medical Societies, Public Health Conferences, Nursing Events and other professional organizations in relevant geographic locations).
Potential barriers to implementing the competencies
Challenges for insertion and implementation of these competencies and curricula into medical school and health care curricula include the already pre-existing compression of medical school curricula and lack of appreciation of this topic as an important component for medical education, as well as the shortage of knowledgeable champions who have access and input into the curricula. Although there is limited funding for development of new materials, there are already numerous resources that could be deployed, with sufficient recognition of the need of this important education.
A major goal is to utilize these core pediatric competencies and framework to stimulate and guide relevant learning initiatives in a variety of geographical locations worldwide. Increasingly the PEHSU members and staff have been involved in consultations and educational programs with colleagues in many countries, including Korea, Japan, Israel, Spain, Chile, Argentina, Vietnam, Mexico and others . To support these efforts, the PEHSU network has been creating public educational materials in multiple languages. For example, the Safer Disinfectants fact sheet has been translated in Korean, Portuguese (Brazilian), Russian, Somali, Spanish Vietnamese and more. Resources that are in English could be easily adapted to other specific languages, cultural and needs of other countries.
The USEPA and PEHSU program have worked in other countries to promote an adoption or adaptation of a PEHSU model that comprises a network of experts and staff who can offer medical education, outreach, and consultative services to communities and other health professionals. There have been presentations regarding environmental health and the PEHSU model at international meetings sponsored by the International Pediatric Associations (IPA) and International Society for Environmental Epidemiology (ISEE).
More can be done to identify “champions” of children’s environmental health in various locations and institutions, who can then inspire and train others .
It is critical that practitioners who care for children have the knowledge and experience to address pediatric environmental health factors. Our list of competencies, coupled with access to available EH resources, provide a structure for organizing education and resources to meet the needs of all levels (medical students, residents, practitioners, allied health care providers). Many of the key pediatric environmental health topics can be woven into existing curriculum and structures for medical students and residency training, and into continuing education courses for practitioners. Leaders and educators at all levels need to take a more active role in bringing this content to the forefront worldwide.
Availability of data and materials
Not applicable since no references made to data sets.
American Academy of Pediatrics
Environmental Health Toolkit
Pediatric Environmental Health Specialty Units
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The authors wish to thank Carrie Dickenson for her help in organizing meetings and communications among the authors and providing data and information, along with Cassandra Bernardi who provided information from the PEHSU National Website classroom.
This article was supported by the American Academy of Pediatrics (AAP) and funded (in part) by a cooperative agreement with the Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry (CDC/ATSDR). The U.S. Environmental Protection Agency (EPA) supports the PEHSUs by providing partial funding to CDC/ATSDR through an Inter-Agency Agreement. The findings and conclusions presented have not been formally disseminated by CDC/ATSDR or EPA and should not be construed to represent any agency determination or policy. Use of trade names that may be mentioned is for identification only and does not imply endorsement by the CDC/ATSDR or EPA.
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Goldman, R.H., Zajac, L., Geller, R.J. et al. Developing and implementing core competencies in children’s environmental health for students, trainees and healthcare providers: a narrative review. BMC Med Educ 21, 503 (2021). https://doi.org/10.1186/s12909-021-02921-3
- Environmental health
- Pediatric environmental health
- Health disparities
- Climate change
- Medical education
- Environmental social determinates of health
- Environmental justice