"Jumping Genes" Linked To Schizophrenia

sciencehabit writes "Roaming bits of DNA that can relocate and proliferate throughout the genome, called 'jumping genes,' may contribute to schizophrenia, a new study suggests (abstract). These rogue genetic elements pepper the brain tissue of deceased people with the disorder and multiply in response to stressful events, such as infection during pregnancy, which increase the risk of the disease. The study could help explain how genes and environment work together to produce the complex disorder and may even point to ways of lowering the risk of the disease, researchers say."

Huh?

[mythosaz]

These rogue genetic elements pepper the brain tissue of deceased people with the disorder and multiply in response to stressful events, such as infection during pregnancy, which increase the risk of the disease.

What sort of pregnancies and stressful events are deceased people having?