The Sarasota-based Roskamp Institute is returning to Sanibel next week to give islanders the opportunity to participate in a 4-year study examining the health effects of aerosolized brevetoxin exposure from red tide. 

Volunteers should call 941-256-8010 to reserve a spot in the study. Roskamp researchers will be meeting with volunteers at SCCF headquarters, 3333 Sanibel-Captiva Rd., on Jan. 13, 14, and 15, from 9 a.m. to 5 p.m.

If you’ve ever experienced itchy eyes, coughing, or a scratchy throat near the beach during a red tide bloom, you’re not alone. These symptoms are caused by tiny marine algae called Karenia brevis, which release airborne toxins known as brevetoxins (PbTx). While most people recover quickly, some may experience issues like headaches, dizziness, confusion, fatigue, or memory problems.

Roskamp’s research explores whether a common genetic factor — the apolipoprotein E (APOE) ε4 allele — makes certain individuals more vulnerable to these effects.

“Partnering with SCCF once again for this critical red tide study allows us to build on a strong foundation of research and community engagement,” said Laila Abdullah, Ph.D., a Roskamp scientist leading the study. “It is important to test participants both during blooms and outside of blooms so that we can see the differences.”

New volunteers as well as volunteers who participated in Roskamp’s 2021 study are welcome to join the current study group. Roskamp visited SCCF in January 2025 during an active red tide bloom, when 10 volunteers provided samples for the study, and again in April 2025 when there wasn’t an active bloom. All volunteers remain anonymous.

By joining the study, participants will help researchers understand how these toxins may enter, how long they stay, and how they are eliminated in the body.

“Understanding the brain health impact of aerosolized exposure to red tide toxins is essential for protecting public health, and SCCF’s expertise and local knowledge are invaluable in advancing this effort,” said Abdullah.

The study seeks 400 participants in Southwest Florida to wear a personal air monitor, provide biological samples, complete health surveys, and return for follow-up procedures, including repeat sampling and health checks.

“By working together, we can provide meaningful insights that inform science, policy, and public awareness. We thank SCCF for assisting with our research efforts,” she added.

Participants must be at least 18 years old and must meet inclusion/exclusion criteria.

To learn more about Roskamp’s research and how to participate in the current study, please contact 941-256-8010.