Oil cleanup workers hired by BP walk along the beach in Dauphin Island, Ala., Wednesday, June 2, 2010. Oil from the Deepwater Horizon disaster has started washing ashore on the Alabama coast.
 / AP Photo
(AP) -- A doctor says 11 workers who have been out on the Gulf of Mexico cleaning up oil from BP's blown-out well have been treated for symptoms that could be related to the oil.
Dr. Damon Dietrich says he has seen patients come through his emergency room at West Jefferson Medical Center with respiratory problems, headaches and nausea.
All were treated and released.
He says 11 people coming in with the same symptoms make him suspicious.
BP and U.S. Coast Guard officials have said dehydration, heat, food poisoning or other unrelated factors may have caused the workers' symptoms. The Louisiana Department of Health and Hospitals is investigating.
For more news & multimedia on the Gulf oil disaster, visit our Oil Spill section.
(Copyright ©2010 by The Associated Press. All Rights Reserved.)