Washington: A chemical hormone released in the body as a reaction to stress could be a key trigger for the late onset of Alzheimer`s disease, a new study has warned. Previous studies have shown that the chemical hormone corticosteroid, which is released into the body`s blood as a stress response, is found at levels two to three times higher in Alzheimer`s patients than non-Alzheimer`s patients. "Stress is an environmental factor that looks like it may play a very important role in the onset of Alzheimer`s disease," said Domenico Pratico, professor of pharmacology and microbiology and immunology in Temple`s School of Medicine in US, who led the study. "When the levels of corticosteroid are too high for too long, they can damage or cause the death of neuronal cells, which are very important for learning and memory," Pratico said.
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