7
NIH-Wide Strategic Plan for Fiscal Years 2021–2025
processes.
31,32
The U.S. Food and Drug Administration
(FDA) also approved the rst automated medical
device to use AI to detect diabetic retinopathy.
33
NIH
will continue to explore and expand further uses of AI.
Understanding Biological, Behavioral, and
Social Determinants of Population Health
Building the foundation for science includes con-
structing an overall picture of how physiological,
behavioral, and social factors alone and in combi-
nation may determine human health. Conditions in
which an individual is born, lives, learns, works, and
ages combined with the behaviors that they engage
in can affect a wide range of health outcomes.
34
Understanding how these factors interact with an
individual’s biological make-up is a vital area of
research. The epigenome consists of chemical com-
pounds and proteins that can attach to DNA and turn
genes on and off. These changes in gene expression
can occur in response to social experiences (both
positive and negative) and environmental exposures
and may be passed from one generation to the
next. NIH supports research on social epigenomics,
the study of how social experiences throughout a
person’s lifetime can affect biology and health status
through changes to the epigenome. Similarly, NIH
supports research on environmental epigenomics,
which looks at how an individual’s exposure to
factors in the physical environment—such as air,
water, and soil—may also impact gene expression.
Studies designed to elucidate how social experiences
and environmental exposures—such as those experi-
enced through structural racism and lower economic
status—affect the individual epigenome among racial
and ethnic groups can provide a unique opportunity
to identify the changes that occur within and between
populations. This knowledge can be used to increase
understanding of minority health and decrease health
disparities.
Social and behavioral research is crucial to under-
standing the health and developmental effects of
using digital technology and electronic media that
have become integral parts of daily life. Findings from
the ABCD study and the NIH Intramural Research
Program have demonstrated that a signicant pro-
portion of children across a wide age range exceed
the daily limits on screen time recommended by the
American Academy of Pediatrics.
35,36
In light of the
COVID-19 pandemic, screen time has dramatically
increased for children of all ages, the effects of which
will need to be investigated. To assess how technol-
ogy and media use affect early childhood health and
development—as well as the nature of social inter-
actions among families, peers, and society—NIH will
support an initiative to study the impact of technology
and media exposure on early childhood development
and health outcomes. This effort will support coor-
dinated research projects using existing and newly
collected data, as well as determining measures for
exposure, usage, development, and health outcomes,
including neuroimaging, language development,
physical activity, and hormone levels.
Integrating different types of research to address
health needs for specic populations can improve
the health of these populations and also provide
insights into common conditions. For example, Down
syndrome is the most common genetic disease of
mild to moderate intellectual disability, occurring in
1out of every 700 babies born in the U.S. In 2018,
NIH launched the INvestigation of Co-occurring
conditions across the Lifespan to Understand Down
syndromE (INCLUDE) project, which studies con-
ditions that affect the general population and often
co-occur (i.e., are comorbid) with Down syndrome,
such as Alzheimer’s disease and related dementias,
autism, cataracts, celiac disease, cardiovascular
disease, and diabetes (Figure 7). The program
focuses on targeted, high-risk/high-reward basic
science studies on the causes of Down syndrome
comorbidities, cohort studies of individuals with
Down syndrome, and inclusion of individuals with
Down syndrome in new and existing clinical trials.
Understanding the fundamental processes underlying
human health is a key step in determining how to
promote and restore health and identify, prevent,
Figure 6. ELSI Research at NIH
The term ELSI refers to the consideration of Ethical,
Legal, and Social Implications of research, particularly
in emerging biomedical fields; ELSI has its roots in the
genomics community, but has expanded to include
other areas of NIH research. ELSI complements scien-
tific research by identifying, analyzing, and addressing
the ethical, legal, and social implications of research
as it is being conducted. NIH supports ELSI research
to facilitate the responsible integration of science into
society. Today ELSI initiatives are underway across NIH
in several areas of biomedical and behavioral research,
such as neuroscience, epidemiology, environmental
health, new and emerging technology development
and use, precision and personalized medicine, clin-
ical research and care, and special and vulnerable
population research. Key to NIH’s approach to ELSI is
collaboration with its multiple stakeholders.