"That poses a huge conundrum for humans," Kenny said. "It shows you how powerful this behavior can become."
Dr. Julio Licinio, director of the John Curtin School of Medicine Research at the Australian National University, called the study answers "one of the many missing pieces in the puzzle of obesity and addiction."
"Now that it is clear that areas of the brain involved in addiction and also involved in obesity, the next question is: Why do those areas become dysregulated in some people, but not in others?" Licinio asked. "And importantly, why do some people who have a biological tendency towards addiction go to drugs, while others go to alcohol, and others go to food?"
The U.S. Centers for Disease Control and Prevention has more about obesity.
SOURCES: Paul Kenny, Ph.D., associate professor, department of molecular therapeutics, Scripps Research Center, Jupiter, Fla.; Pietro Cottone, Ph.D., assistant professor, pharmacology and psychiatry, and co-director, Laboratory of Addictive Disorders, Boston University School of Medicine, Boston; Julio Licinio, M.D., director, John Curtin School of Medicine Research, Australian National University, Canberra; March 28, 2010, Nature Neuroscience
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