"I have critically high levels of chemicals in my body," 33-year-old Steven Aguinaga of Hazlehurst, Mississippi told Al Jazeera. "Yesterday I went to see another doctor to get my blood test results and the nurse said she didn't know how I even got there."
Aguinaga and his close friend Merrick Vallian went swimming at Fort Walton Beach, Florida, in July 2010.
"I swam underwater, then found I had orange slick stuff all over me," Aguinaga said. "At that time I had no knowledge of what dispersants were, but within a few hours, we were drained of energy and not feeling good. I've been extremely sick ever since."
BP's oil disaster last summer gushed at least 4.9 million barrels of oil into the Gulf of Mexico, causing the largest accidental marine oil spill in history - and the largest environmental disaster in US history. Compounding the problem, BP has admitted to using at least 1.9 million gallons toxic dispersants, including one chemical that has been banned in the UK.
According to chemist Bob Naman, these chemicals create an even more toxic substance when mixed with crude oil. Naman, who works at the Analytical Chemical Testing Lab in Mobile, Alabama, has been carrying out studies to search for the chemical markers of the dispersants BP used to both sink and break up its oil.
Poly-aromatic hydrocarbons (PAHs) from this toxic mix are making people sick, Naman said. PAHs contain compounds that have been identified as carcinogenic, mutagenic, and teratogenic.
"The dispersants are being added to the water and are causing chemical compounds to become water soluble, which is then given off into the air, so it is coming down as rain, in addition to being in the water and beaches of these areas of the Gulf," Naman told Al Jazeera.
"I'm scared of what I'm finding. These cyclic compounds intermingle with the Corexit [dispersants] and generate other cyclic compounds that aren't good. Many have double bonds, and many are on the EPA's danger list. This is an unprecedented environmental catastrophe."
Click for more coverage of the BP Oil Spill, including the other segments of the 8-part series, Fatal Fallout.
Aguinaga's health has been in dramatic decline.
"I have terrible chest pain, at times I can't seem to get enough oxygen, and I'm constantly tired with pains all over my body," Aguinaga explained, "At times I'm pissing blood, vomiting dark brown stuff, and every pore of my body is dispensing water."
And Aguinaga's friend Vallian is now dead.
"After we got back from our vacation in Florida, Merrick went to work for a company contracted by BP to clean up oil in Grand Isle, Louisiana," Aguinaga said of his 33-year-old physically fit friend.
"Aside from some gloves, BP provided no personal protection for them. He worked for them for two weeks and then died on August 23. He had just got his first paycheck, and it was in his wallet, uncashed, when he died."
National health crisis