"Argentinian scientists have found that rotating shift workers have lower levels of serotonin, a chemical in the brain that helps regulate sleeping and waking patterns, according to the new data."

"Researchers at the Universidad de Buenos Aires analyzed data from 683 men. They compared serotonin levels among 437 day workers and 246 rotating shift workers. Day and night work periods started at 6 a.m. and 6 p.m."

"The findings may help scientists "understand the mechanisms related to the circadian rhythm desynchronization imposed by the rotating shift work regime," said study author Carlos Pirola in a prepared statement. They might also lead to new and better
... read the whole article