Climate Change Hits Minorities Hardest and We Ignore It

The Map That Tells a Different Story

In 2023, a team of researchers led by Thilagawathi Abi Deivanayagam at The Lancet published something that should have stopped the world: a simple pair of maps. One map showed which countries have emitted the most carbon dioxide since the Industrial Revolution. The other showed which countries face the highest risk of death and disease from climate change by 2050.

The maps are almost photographic negatives of each other.

The first map is dark with the weight of Europe, North America, and parts of East Asia. The second map is dark with the burden of sub-Saharan Africa, South Asia, and the Middle East. The countries that caused the problem are not the ones that will suffer most from it. And within those suffering countries, the people who will die first are not the ones who own cars, fly on planes, or eat beef every night. They are the ones who have been systematically excluded from wealth, power, and decision making for generations (Deivanayagam et al., 2023).

This is not an accident. It is a pattern with a name.

What Does Structural Discrimination Have to Do With a Heatwave?

The paper from Deivanayagam and her coauthors Sonora English, Jason Hickel, and Jon Bonifacio is a scoping review. That means they did not run a single experiment. They surveyed the existing scientific literature on how racism, xenophobia, and discrimination amplify the health impacts of climate change. They also ran a geographic analysis of carbon emissions versus projected mortality risk. Then they layered in case studies, testimony, and policy analysis from multiple disciplines.

The core finding is straightforward but brutal: racism and climate change do not just coexist. They interact. They multiply each other.

The authors found that racially minoritized groups, migrants, and Indigenous communities face a disproportionate burden of illness and mortality due to climate change in different contexts around the world (Deivanayagam et al., 2023). This is not a single study from a single country. It is a pattern that holds across the academic literature, across continents, across types of climate hazards.

Take a heatwave in a city. The temperature difference between a wealthy, tree lined neighborhood and a low income, concrete heavy neighborhood can be 10 to 15 degrees Fahrenheit. That is not an accident of geography. It is the result of decades of redlining, zoning laws, and disinvestment that pushed minority communities into less desirable land. When the heat hits, those communities have fewer parks, fewer shade trees, fewer air conditioners, and less access to healthcare. They also have higher rates of pre existing conditions like asthma and heart disease, which are themselves products of environmental racism.

The heatwave does not discriminate. The city does.

The Global South Is Paying for the Global North's Carbon Debt

The geographic analysis in the paper is the part that demands attention. Deivanayagam and her team mapped projected mortality and disease risk attributable to climate change per 100,000 people in 2050. Then they overlaid that with historical responsibility for carbon emissions.

The result is a visual indictment.

The Global South, which has contributed the least to climate change, will bear the heaviest burden of death and disease. The Global North, which has contributed the most, will face comparatively lower risks. The authors are careful not to overstate the precision of these projections. But the direction is unambiguous. The magnitude is staggering.

This is not a future hypothetical. It is already happening. The paper cites evidence that climate related health impacts, from infectious disease to malnutrition to heat stress, are already concentrated in the regions and populations that have the least power to adapt (Deivanayagam et al., 2023). The people who are most vulnerable are also the people who are most excluded from the conversations about solutions.

Three Pathways That Connect Racism, Climate, and Death

The paper identifies three main pathways through which climate change, discrimination, and health interact. Understanding these pathways is not academic. It is diagnostic. If you know how the machine works, you know where to pull the lever.

Pathway 1: Exposure

Discrimination determines where people live, work, and sleep. It determines who lives near highways, factories, waste sites, and flood zones. It determines who has access to clean water, green space, and safe housing. When a climate disaster strikes, these pre existing conditions become death sentences.

The authors found that Indigenous communities, for example, are often pushed onto marginal lands that are more vulnerable to drought, flooding, and extreme weather. Migrants and refugees are frequently housed in informal settlements with no infrastructure to withstand storms or heatwaves. These are not natural disasters. They are structural disasters expressed through weather.

Pathway 2: Susceptibility

Discrimination also shapes the body. Chronic stress from racism, economic insecurity, and social exclusion leads to higher rates of hypertension, diabetes, respiratory disease, and mental illness. These conditions make people more vulnerable to climate impacts. Heat kills people with heart conditions faster. Air pollution kills people with asthma faster. Floods and displacement trigger PTSD more severely in people who already carry the weight of systemic trauma.

The paper does not use the phrase "weathering," but that is the concept. The body ages faster under the pressure of discrimination. Climate change accelerates that process.

Pathway 3: Access to Adaptation

When a climate disaster happens, not everyone can evacuate. Not everyone has a car, savings, a place to go, or a job that allows them to leave. Not everyone has health insurance, a primary care doctor, or a pharmacy that is open and stocked. Not everyone is listened to by emergency responders, insurance adjusters, or government officials.

The authors document how racially minoritized communities are systematically excluded from climate adaptation planning. They are not at the table when cities decide where to build flood walls, where to plant trees, or how to distribute cooling centers. They are not consulted when governments design early warning systems or evacuation routes. They are treated as passive recipients of aid rather than active participants in their own survival.

This is not negligence. It is a pattern of exclusion that has been documented for decades.

The Numbers That Should Make You Uncomfortable

The paper does not provide a single headline number. It provides a framework for understanding why numbers matter. But the data it cites from other studies is chilling.

One study referenced in the review found that in the United States, historically redlined neighborhoods are significantly hotter than non redlined neighborhoods. Another found that Black Americans are more likely to die from heat related causes than white Americans, even after controlling for income. Another found that Indigenous communities in the Amazon face higher rates of malaria and other vector borne diseases as temperatures rise, because deforestation and climate change are pushing disease carrying mosquitoes into new areas.

These are not isolated findings. They are the rule.

The authors also highlight the gap between responsibility and vulnerability at the global level. The 10 largest emitters of carbon dioxide are responsible for more than half of global emissions. The 100 least emitting countries are responsible for less than 3 percent. Yet the countries that face the highest projected mortality from climate change are almost all in the Global South.

This is not a coincidence. It is a structural relationship.

What the Paper Does Not Claim

The authors are careful about what they claim. They do not say that every climate impact is caused by racism. They do not say that all minority communities are equally vulnerable. They do not say that the only solution is to redistribute wealth, though that is clearly part of the answer.

What they do say is that ignoring structural discrimination leads to incomplete climate policy. If you design a climate adaptation plan without accounting for racism, you will design a plan that helps the people who already have the most resources. You will widen the gap. You will make the problem worse.

The paper also does not claim that individual behavior change is irrelevant. It claims that individual behavior change, while useful, is not sufficient. The people who need to change their behavior the most, the high emitters in the Global North, are not the ones who will bear the consequences of their choices. The people who will bear the consequences are the ones who have the least power to change the system.

That is the core injustice.

Why the Health Community Is the Right Audience

The paper was published in The Lancet, one of the world's leading medical journals. That is not an accident. The authors are writing to doctors, nurses, public health officials, and medical researchers. They are telling the health community that climate change is a health emergency, and that health equity cannot be achieved without racial justice.

The authors write: "The health community must urgently examine and repair the structural discrimination that drives the unequal impacts of climate change to achieve rapid and equitable action" (Deivanayagam et al., 2023).

This is a call to action, not a suggestion. The health community has immense power. It sets research agendas. It trains clinicians. It advises governments. It shapes public narratives. If the health community continues to treat climate change as a purely technical problem, it will fail the populations it is supposed to serve.

The paper is a demand that the health community stop pretending that racism is someone else's problem.

The Case Studies That Make It Real

The paper includes case studies from multiple countries. One focuses on the impact of Hurricane Katrina in the United States. Black residents of New Orleans were disproportionately affected by the storm and its aftermath, not because the storm was racist, but because decades of discrimination had concentrated Black communities in low lying areas, weakened their social safety nets, and eroded their access to healthcare and transportation.

Another case study focuses on the impact of drought and food insecurity on Indigenous communities in Australia. These communities were already experiencing higher rates of chronic disease and poverty. When drought came, they had fewer resources to adapt. They suffered more.

Another case study examines the experience of migrant farmworkers in the United States. These workers, many of whom are undocumented, are exposed to extreme heat, pesticides, and poor living conditions. They have no legal protections and little access to healthcare. When climate change makes heatwaves more frequent and intense, they die.

These are not abstract policy problems. They are people.

What This Actually Means

• ▸Climate adaptation planning must include the people who are most affected. That means funding community led organizations, hiring from affected communities, and designing solutions with input from the ground up. Top down planning will reproduce the same patterns of exclusion.

• ▸Carbon pricing and emissions reduction policies must account for historical responsibility. The countries and corporations that caused the problem should pay for adaptation and loss and damage in the countries that are suffering. This is not charity. It is debt repayment.

• ▸Health systems must prepare for climate impacts that are concentrated in marginalized communities. That means training clinicians to recognize climate related illness, investing in community health workers, and building climate resilient infrastructure in underserved areas.

• ▸Research funding must prioritize the study of structural discrimination as a driver of climate vulnerability. The paper shows that this is an understudied area. More evidence is needed, but the direction is clear.

• ▸The health community must advocate for racial justice as a climate strategy. That means supporting policies that address housing discrimination, environmental racism, and economic inequality. These are not separate issues. They are the same issue.

The maps are clear. The numbers are clear. The question is whether we will look at them and act, or look away and pretend the pattern does not exist.

Deivanayagam and her colleagues have done their job. The rest is up to us.