9/11 Health Study: New Research Will Track Children Exposed to the Attacks

9/11 Health Study: New Research Will Track Children Exposed to the Attacks

Twenty-five years after September 11, 2001, U.S. health researchers are preparing a major new study focused on people who were exposed to the World Trade Center disaster when they were children or before they were born.

The research aims to answer an important question: Could exposure to the toxic dust and pollution released after the attacks affect health decades later?

Around 25,000 children were living or attending school near the World Trade Center at the time of the attacks. Some were very young children, while others were still in the womb. Many were exposed to the enormous dust cloud and pollutants released when the towers collapsed.

Why Was This Group Overlooked?

Much of the health research conducted after 9/11 focused on adults, particularly firefighters, police officers, rescue workers and other people involved in the response and recovery.

That left scientists with far less information about people who were exposed during childhood or pregnancy.

According to the CDC's National Institute for Occupational Safety and Health, relatively little research has examined people who were exposed at a young age. Researchers now want to close that gap.

What Will Researchers Study?

The new research will examine people who were 21 or younger, or in the womb, when they were exposed to 9/11-related conditions.

Scientists are particularly interested in possible long-term effects involving respiratory health, lung development, reproductive health, brain development, mental health, metabolic conditions, cardiovascular disease and cancer.

Importantly, the study is designed to investigate these possible connections—it does not mean that everyone exposed as a child will develop these illnesses.

Researchers also plan to include a comparison group that was not exposed, which can help scientists better understand whether differences in health outcomes are associated with the exposure.

When Could the Study Begin?

Congress approved funding for this research in 2022. The CDC plans to establish a World Trade Center Youth Research Coordinating Center to organize the work and build a group of people who can participate in future studies.

Reuters reports that the research could begin by July 2027, with funding of up to $50 million.

Why Does This Matter Now?

Many children exposed to 9/11 are now adults in their 30s and 40s. Some health conditions can take years to become noticeable, making long-term monitoring particularly important.

The CDC says that more than 1,500 scientific publications have already documented health effects among people exposed to the World Trade Center disaster, but only a small portion have focused on those exposed at a young age.

The new research could therefore provide information that was missing for decades—and potentially help doctors and public-health officials understand the consequences of environmental exposure during early life.

Twenty-five years later, the health story of 9/11 is still developing. This new study could help scientists understand how exposure during childhood and pregnancy may shape health long after the original disaster.