From the ABC:
Junk food may lower stress: research
New Australian research shows that eating junk food appears to lower stress levels.
Professor Margaret Morris from the University of New South Wales conducted research on mice who had been separated from their mothers.
Animals given junk food appeared less stressed and agitated than those fed on a healthy diet.
Professor Morris says the brain pathways regulating appetite in rats are similar to those in humans.
The research was presented at the Australian Neuroscience Society meeting in Hobart.