News Release

Wednesday, February 29, 2012

More than 10,000 participants have joined the GuLF STUDY

NIH seeking thousands more oil spill workers to find potential health effects of spill.

Nearly two years after the Deepwater Horizon oil spill in the Gulf of Mexico, more than 10,000 cleanup workers and volunteers have enrolled in the Gulf Long-term Follow-up (GuLF) STUDY, a national effort to determine if the oil spill led to physical or mental health problems. Reaching the GuLF STUDY's target goal of 55,000 participants would make it the largest health study of its kind.

The study is conducted by the National Institute of Environmental Health Sciences (NIEHS), part of the National Institutes of Health.

"Ten thousand people have stepped forward to help find answers for their community and for the health concerns that linger after the oil spill," said Dale Sandler, Ph.D., chief of the NIEHS Epidemiology Branch and principal investigator of the study. "I encourage anyone who helped in the cleanup effort to make the call today to enroll in the GuLF STUDY. We want to hear everyone’s story. Everyone is important to this study."

For more information, people can call the toll-free number at 1-855-NIH-GULF (1-855-644-4853) or visit the GuLF STUDY website at

NIEHS was in the Gulf at the beginning of the oil disaster that occurred on April 20, 2010, and offered safety training to more than 150,000 cleanup workers. Now, some of these workers have concerns about their health as a result of participating in the cleanup. The GuLF STUDY was designed to answer some of these questions and will generate important data that may help guide policy decisions on health care and services in the Gulf region. Findings may also influence responses to future oil spills.

The GuLF STUDY staff reached out to the 150,000 people who took the cleanup worker safety training, but volunteers have been hard to find. Many have moved to new residences or changed telephone numbers, so the study has been using a range of approaches to invite people to join the study, including billboards, radio and TV, Facebook and Twitter, and community meetings. Individuals may be eligible for the study if they:

  • Are at least 21 years old
  • Did oil spill cleanup work for at least one day
  • Supported the cleanup effort in some way or completed oil spill worker training

When volunteers join the GuLF STUDY, they are asked to complete a survey over the telephone. Most participants will also get a medical exam at home, and provide blood, urine, and other samples. When the medical visit is complete, participants will receive a gift card worth $50.

"We are grateful to have the support of more than 100 community and professional groups across the Gulf that represent workers who believe in the GuLF STUDY and who have endorsed it," said Sandler. "The study was developed to make participation as easy and convenient as possible and participation is confidential. We protect the identity of every participant."

GuLF STUDY is a registered trademark, held by the National Institute of Environmental Health Sciences.

The NIEHS supports research to understand the effects of the environment on human health and is part of NIH. For more information on environmental health topics, visit Subscribe to one or more of the NIEHS news lists to stay current on NIEHS news, press releases, grant opportunities, training, events, and publications.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit

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