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Perception of Food Flavor is Shaped by More Than Just the Tongue

by Dr. Trupti Shirole on November 22, 2015 at 6:35 AM
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 Perception of Food Flavor is Shaped by More Than Just the Tongue

Chemotherapy kills all fast-growing cells in the body. As cancer cells die, so do all the healthy fast-growing cells, including the cells responsible for hair growth and taste buds. So your hair falls out and everything tastes metallic.

Dan Han, a neuropsychologist at the University of Kentucky, said, "Here they are, critically ill, needing good nutrition more than ever, and they can't enjoy food? It's beyond unfair."


Han has become an ardent advocate for the concept that quality of life issues - specifically, the enjoyment of food - should be measured as a clinical outcome for patients. A chance meeting in 2012 with internationally acclaimed chef Fred Morin brought the issue to his attention.

Han said, "Like most clinicians, when patients brought up the issue of reduced or distorted flavor perception (if they brought it up at all), I was sympathetic but not motivated, because there's not much we can do to help."

But Morin, chef and owner of the legendary restaurant Joe Beef, is a bioengineer by training and hugely interested in the concept of neurogastronomy, which merges science and culinary worlds by studying the human brain and the behavior that influences how we experience food. Morin encouraged Han to read a book by Yale neuroscientist Gordon Shepherd, who coined the term in 2006.

Han said, "I was hooked. I knew that if we could bring together chefs, neuroscientists and food scientists to explore ways to help these patients enjoy a meal, break bread with family and friends and enjoy that process again, it would be a significant contribution to science and to life."

That chance meeting was the spark for the founding of the International Society of Neurogastronomy (ISN), and last week more than 200 scientists, patients, chefs, foodies and others gathered at UK for the inaugural ISN Symposium, sharing their knowledge and exploring opportunities to improve quality of life for people who have lost their perception of taste or smell due to cancer, brain injury, stroke, Alzheimer's, Parkinson's, or other neurological disorders.

The innovative event departed sharply from the typical academic symposium. There were no poster presentations, no prolonged science-y lectures. Instead, chefs like Morin, 'Next Iron Chef' finalist and New York restaurateur Jehangir Mehta, and multiple James Beard finalist chef Ed Lee shared the podium with Gordon Shepherd, prize-winning experimental psychologist Charles Spence, acclaimed physiologist Tim Mcclintock, agricultural researcher Bob Perry, and many others for brief TED talk-style presentations that addressed every aspect of food, flavor, perception and health.

During breaks, participants were encouraged to visit eight tasting stations, where experiments demonstrated how the perception of flavor is shaped by more than just the tongue. Attendees wore blindfolds, sniffed scent jars, held their noses, and more while they sampled. At one station, tasters eating a pink cookie while listening to gentle music were astonished to learn that it was equally as sweet as the black cookie paired with harsh music.

Neurogastronomy, as a science, is still in its infancy. The symposium has opened the door to the flow of information and ideas among neuroscientists, culinary professionals, food scientists and agriculture scientists. Participants were enthusiastic about the day's successes and the prospect for continued conversations that advance the science in the context of neurologically-related taste impairments, sustainability, disease prevention, and more.

Han said, "This really organically grew into something amazing, because people from such randomly different disciplines came together. The commonality that united us was to achieve better food, better flavor, better health, and better quality of life."

Source: Eurekalert

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