Research in Southwest Florida indicates that toxins produced by cyanobacterial blooms can become airborne, creating potential inhalation exposure for people distant from affected waters. Cyanobacteria, sometimes called blue-green algae, historically contributed to Earth’s oxygen-rich atmosphere. Excess nutrients from agricultural runoff or sewage can trigger rapid growth, releasing harmful compounds. A Wyoming-based nonprofit collaborated with Florida institutions to detect these toxins using specialized airborne monitors. All collected samples contained the neurotoxin 2,4-DAB, matching substances previously identified in beached dolphins. Scientists reported that residents may face ongoing low-level exposure through breathing and called for further health evaluations. The findings build on earlier observations linking cyanobacterial toxins to increased neurodegenerative disease risks, including ALS, and note that inhalation presents greater prevention challenges than avoiding contaminated water or food.
