&EPA
United States
Environmental Protection
Agency
Climate Change and the Health
of Indigenous Populations
Understanding the threats that climate change
poses to human health can help us work
together to lower risks and be prepared.
Climate change threatens human health, including
mental health, and access to clean air, safe drinking
water, nutritious food, and shelter. Everyone is affected
by climate change at some point in their lives. Some
people are more affected by climate change than
others because of factors like where they live; their
age, health, income, and occupation; and how they go
about their day-to-day life.
Indigenous communities and tribes are diverse and
span the United States. While each community and
tribe is unique, many share characteristics that can
affect their ability to prepare for, respond to, and cope
with the impacts of climate change on health. These
include:
• living in rural areas or places most affected by
climate change (like communities along the coast)
• relying on surrounding environment and natural
resources for food, cultural practices, and income
• coping with higher levels of existing health risks
when compared to other groups
• having high rates of uninsured individuals, who
have difficulty accessing quality health care
• living in isolated or low income communities with
limited access to healthcare services
Climate change
threatens food,
water, air, infrastructure,
and cultural identity in
different ways depending on where
you live.The following pages provide
examples of how Indigenous people across the United
States are vulnerable to climate change.
What is climate change and why does it
matter for health?
We've all heard of it, but what exactly is climate change?
Greenhouse gases act like a blanket around Earth,
trapping energy in the atmosphere. Human activities,
especially burning fossil fuels for energy, increase the
amount of greenhouse gases in our atmosphere and
cause the climate to warm. Climate is the typical or
average weather for an area. Climate change is any
change in average weather that lasts for a long period of
time, like warming temperatures. Climate change affects
the food we eat, the air we breathe, and the water we
drink. It also leads to extreme weather events, like
flooding, droughts, and wildfires. All of these impacts
affect human health.
There are steps tribal communities can take to protect
themselves from these impacts. For example, Indigenous
people have worked in regional networks, collaborated
with scientists and academics, and leveraged Federal
resources to limit vulnerabilities and build greater
community resilience.Together, these actions can help
to limit the negative effects of climate change on health.
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TRIBAL HEALTH RISKS ACROSS THE NATION
FOOD
Climate change will make it harder for tribes to access safe
and nutritious food, including traditional foods important to
many tribes'cultural practices. Some examples of health
risks to tribes include:
In the Upper Great Lakes Region, already declining wild
rice harvests in Ojibwe communities may be further
affected by the impacts of rising temperatures and
changing precipitation patterns on rice-growing
conditions in lakes and rivers.
Many Indigenous people along the West and Gulf
Coasts rely on fish and shellfish for food, livelihoods, and
certain ceremonial or cultural practices. Higher sea
surface temperatures increase the risk that certain fish
and shellfish will become contaminated with mercury,
harmful algal toxins, or naturally-occurring bacteria.
For many Alaska Native communities, rising
temperatures and permafrost thaw threaten traditional
methods of safe food storage in ice cellars or ice houses,
and increase risk of food contamination. Climate change
may also affect the abundance and nutritional quality of
local Alaskan berries that are an important part of
traditional diets.
O
WATER
Many tribes already lack access to safe drinking water and
wastewater treatment in their communities. Climate change
is expected to increase health risks associated with water
quality problems like contamination and may reduce
availability of water, particularly during droughts. Some
examples of health risks to tribes include:
Existing water quality problems on the Fort Apache
reservation in Arizona have been associated with
diarrhea and stomach issues in children. Rising
temperatures and more frequent and intense rain can
cause more harmful bacteria, viruses, and algae to grow
in water supplies. People—especially children—who
swim in, play in, or drink this water can become ill if
exposed to contaminated water.
Many remote tribal households, primarily in western
Alaska Native Villages and the Navajo Nation, do not
have adequate drinking water and wastewater treatment
infrastructure, increasing the risk of contaminated water
diseases like diarrhea. American Indian/Alaska Native
infants are more likely to be hospitalized with diarrhea
than other infants in the U.S.
CLIMATE CHANGE AND THE HEALTH OF INDIGENOUS POPULATIONS
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AIR
Climate change is expected to increase health risks
associated with poor air quality, worsening asthma, allergies,
chronic obstructive pulmonary disorder (COPD) and other
respiratory conditions. In Indigenous populations, rates of
these illnesses are higher than those of other racial and
ethnic groups. Some examples of health risks to tribes
include:
Tribal communities like the Navajo Nation in the
Southwestern United States, especially in Arizona and
New Mexico, face existing problems with polluted air
from blowing dust. The Southwest will have more intense
droughts as a result of climate change, increasing the
potential for wind erosion to cause soil dust to become
airborne.
Changing weather patterns and more intense and
frequent wildfires can raise the amount of pollution, dust,
smoke, and pollen in the air. Projected increases in large
wildfires threaten air quality for tribes in Alaska and the
western United States, like the Confederated Salish and
Kootenai in Montana.
ROADS, BUILDINGS, AND
LAND
Climate change threatens property, roads, buildings, and
other infrastructure, especially in tribal communities that are
already dealing with poor infrastructure. Increasing
frequency or intensity of extreme weather events can
damage electricity, water, communication, and
transportation systems, which are important to maintaining
access to health care and emergency response services.
Some examples of health risks to tribes include:
Rural areas often have limited transportation options.
The Navajo Nation on the Colorado Plateau face
existing problems with roads blocked by migrating sand
dunes, which can be caused, in part, by droughts and
rising temperatures.
In Alaska, as permafrost thaws into mud, it causes
damage to roads, highways, and runways, and results in
millions of dollars beyond what would otherwise be
spent per year in repairs.
Transportation systems and infrastructure in rural areas
are particularly vulnerable to risks from flooding and
rising sea levels. The people of several Alaskan
Villages— including Newtek, Shishmaref, and
Kivalina—are facing relocation due to rising sea levels
and coastal erosion.
Of the 5.2 million American Indians and Alaska Natives registered
in the U.S. Census, approximately 1.1 million live on or near
reservations or Native lands, located mostly in the Northwest,
Southwest, Great Plains, and Alaska.
http://nca2014.globalchange.gov/report/sectors/indigenous-peoples
CLIMATE CHANGE AND THE HEALTH OF INDIGENOUS POPULATIONS
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Climate Change and Culture
The impacts of climate change are not limited to
physical health. By affecting the environment and
natural resources of tribal communities, climate
change also threatens the cultural identities of
Indigenous people. As plants and animals used in
traditional practices or sacred ceremonies become less
available, tribal culture and ways of life can be greatly
affected. Medicinal plants are also at risk, which may
change the way traditional healing is practiced. In
addition, many Indigenous people, especially students
and young professionals seeking education and
An Urban Perspective
Though climate change is an important concern
from coast to coast, different areas are affected in
different ways. Understanding which climate
change impacts are most likely to threaten an area
can help communities plan for risks and adapt to
changes. For example, many Indigenous people
live in urban communities and some reservations
are located near or in large metropolitan areas. For
example, many Indigenous people live in cities,
and some reservations are located near or in large
urban areas, like the Salt River Pima-Maricopa
Indian Community in the metropolitan Phoenix
area. Climate change is expected to make air
pollution worse, especially in already polluted
places like cities. Sea level rise caused by climate
change also threatens coastal cities and
communities.The"Learn More"section at the end
of this fact sheet provides resources that give more
information about risks, potential impacts,
vulnerabilities, ways to adapt to a changing
climate, and steps to protect the health of those in
tribal communities.
employment opportunities, have been moving away
from their rural communities and reservations to urban
areas. This relocation may disrupt the social fabric of
the community and the sharing of traditional
knowledge and oral history. Climate change, and its
impact on natural resources central to tribal tradition
and culture, acts on top of existing stressors like youth
relocation to further challenge traditional ways of life.
This fact sheet is based on "The Impacts of Climate
Change on Human Health in the United States: A
Scientific Assessment."To explore the full report, go to:
https: health2016.globalchange.gov
Learn More
Climate Change: Human Health
https://www3.epa.gov/climatechange/impacts/health.html
Climate Change: What You Can Do
https://www3.epa.gov/climatechange/wycd/
Environmental Protection in Indian Country
https://www.epa.gov/tribal
Indigenous Peoples, Lands, and Resources
http://nca2014.globalchange.gov/report/sectors/
indigenous-peoples
U.S. Climate Resilience Toolkit: Tribal Nations
https://toolkit.climate.gov/topics/tribal-nations
Photo credit on cover: United States Department of
Agriculture; Jennifer Haliski, Food and Drug Administration;
Mountain-Prairie Region of the U.S. Fish and Wildlife Service
CLIMATE CHANGE AND THE HEALTH OF INDIGENOUS POPULATIONS
EPA 430-F-16-053
May 2016
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