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Renowned Princeton University Psychologist Dies

Bartley Hoebel. Photo courtesty of Princeton University Office of Communications.

Bart Hoebel, a Princeton University professor of psychology who was internationally known for his research on food addiction, died of cancer June 11 in Princeton. He was 76.

A member of the Princeton faculty since 1963, Hoebel’s interest in understanding how the brain rewards behavior led to discoveries in the areas of eating disorders and obesity, addiction, alcohol consumption and depression. He pioneered studies into the mental rewards of eating, and his research on sugar addiction in rats generated worldwide attention for its possible public health applications.

“His studies on food addiction led to the development of a new subfield and a novel approach to studying the obesity epidemic,” said Nicole Avena, a visiting assistant professor of psychology at Princeton and a research assistant professor of psychiatry at the University of Florida.

“The work Bart produced has been influential on many other scientists,” added Avena, who earned her Ph.D. in psychology and neuroscience from Princeton in 2006 under Hoebel’s mentorship and continued to collaborate with him through 2010. “He aimed to understand brain mechanisms that drive us to engage in certain types of behavior, like eating, and those findings really laid the groundwork for future research.”

In recent years, Hoebel’s lab led research demonstrating that sugar can be an addictive substance, causing changes in the brains and behaviors of rats similar to many drugs of abuse, such as cocaine, morphine and nicotine. His lab completed an animal model of sugar dependency in 2008 that provided the first set of comprehensive studies demonstrating sugar addiction in rats and a brain mechanism that might underlie it.

Hoebel’s work allowed scientists to examine more deeply the connections between food cravings and brain physiology, with the hope that the research could one day influence work related to humans with eating disorders.

“Bart was definitely a pioneer. He was not afraid to put out a new idea that people may not necessarily agree with at first and run with it. Our first work with food addiction in rats was really spurred by Bart’s enthusiasm,” Avena said.

Hoebel had been interested in the brain mechanisms that control appetite and body weight since he was an undergraduate at Harvard University studying with the renowned behaviorist B.F. Skinner.

Most recently in 2010, Hoebel’s research team studied the differences between high-fructose corn syrup and table sugar in causing weight gain in rats and in impacting circulating blood fats called triglycerides.

In earlier work, he had shown that desires for fatty foods and alcohol share a chemical trigger in the brain, helping to explain one of the mechanisms involved in alcohol dependence and adding to scientists’ understanding of the neurological link between the desires for alcohol and food.

Some of his earlier research included examinations of how animals regulate their body weight and the neural pathways and neurochemicals involved with motivation. A 1999 study involved examining the brain chemistry of motivation and depression by looking at how the chemical dopamine reinforces connections between cognitive inputs and behavioral output so that successful behaviors are repeated.

Beyond his research, Hoebel was a gracious mentor to colleagues and students, his peers said.

“He loved teaching and was dedicated to teaching undergraduates — not just getting up there and lecturing in class, but training young people to be scientists and really caring about the outcomes of their lives,” said Barry Jacobs, professor of psychology and the Princeton Neuroscience Institute.

Outside the lab, Hoebel was described by colleagues as a renaissance man whose generosity and sense of adventure included hobbies such as hot air ballooning, Christmas tree farming, and building a steam calliope into an antique fire truck to drive in parades. He also ran a nonprofit organization, the Delaware River Steamboat Floating Classroom, where students and groups experience interactive ecology lessons on board a replica of an 1880 sternwheeler on the Delaware River.
Born in New York City, Hoebel earned his undergraduate degree in psychology from Harvard in 1957 and his Ph.D. in 1962 in physiological psychology from the University of Pennsylvania, where he also worked as a postdoctoral fellow and instructor before joining the Princeton faculty.

He is survived by his daughters, Valerie Hoebel and Cary Hoebel Lane; a son, Brett; a son-in-law, Ken Lane; and two grandchildren, Fanter and Finn Lane. He was pre-deceased by his wife, Cindy.

A private family gathering for Hoebel was held earlier this week, and the Princeton psychology department Department held a living memorial service for him in January. In lieu of flowers, donations in Hoebel’s honor may be sent to the Delaware Steamboat Floating Classroom via www.steamboatclassroom.org, or to the Sierra Club via its website www.sierraclub.org.

Krystal Knapp

Krystal Knapp is the founding editor of Planet Princeton. She can be reached via email at editor AT planetprinceton.com. Send all letters to the editor and press releases to that email address.

  • Larry Reid

    I am deeply sadden to hear of Bart’s death. He was a generous colleague from our graduate student days to recently. Although we were only academic colleagues, I counted him as a friend and feel the loss as a friend might. Larry Reid

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