Five years is actually not a long time for science to understand a process as complex as the pathways of the oil after a large spill. Some of the impacts of the Deepwater Horizon spill on the marine life and ecosystems of the Gulf of Mexico will only become visible in future years. We use oil products daily.
First the researchers examined the effects of lowering cortisol to below a normal (or baseline) level. Then they compared the effects of low, medium, high, and very high cortisol levels in patients undergoing cardiac surgery, a procedure that causes a lot of inflammation.
Cortisol is a hormone that, when released in excess, can create a host of pathological conditions in the body. When we are under stress or have an infection, cortisol raises our blood pressure and blood sugar. These changes help us survive short periods of stress, but they hurt us when they continue for years. The problems associated with chronically elevated cortisol levels include: Suppressed immunity.