Current Weather
The Spy FM

Feeling A Little Blue May Mask Our Ability To Taste Fat

Filed by KOSU News in Science.
June 6, 2013

So, here’s the scenario: You’re feeling a little blue, then you watch an emotional movie and dig into a bowl of ice cream.

Are you aware of how fattening your comfort food is? Likely not. Especially in the moment.

A new study finds that temporary, strong emotions, like the sadness we experience from a weepy movie, can significantly decrease our ability to taste — or perceive — the amount of fat we’re eating.

“Strong emotions can confuse our fragile sense of taste perception,” Elissa Epel, a health psychologist at the University of California, San Francisco, told The Salt by email. She was not involved in this study, but her research looks at how stress influences us.

“Stress signals danger and should make us detect (tastes like) bitter more strongly,” Epel says. And this is exactly what happened in the study.

Participants in the study experienced a stronger sensitivity to bitter, sweet and sour tastes after watching emotional videos with storylines that were both happy and sad. In fact, their sensitivities to these tastes were heightened by about 15 percent.

But, at the same time, participants’ ability to distinguish levels of fat “got much worse,” according to researcher Paul Breslin of the Department of Nutritional Sciences at Rutgers University, who co-authored the study.

“It was a surprise,” Breslin says, that perceptions of fat moved in the opposite direction.

It turns out, Breslin says, that his findings fit with a body of evidence that suggests that people who are mildly depressed and who have elevated body weight may have lower sensitivity to fat.

So, it’s possible that if “they don’t know the fat is there, and eat it, they may be inadvertently eating more fat,” says Breslin. “That’s sort of the concern here.”

The research was carried out in Germany at the University of Wurzburg. Lead author Petra Platte, a psychologist by training, recruited participants to taste samples of a creamy drink that contained varying levels of fat.

At the start of the study, the participants were all feeling a little blue or anxious. Researchers were able to assess the emotional status of the participants by having them complete a 21-question survey, called the Beck Depression Inventory.

Then, the participants were asked to watch video clips. There was a feel-good, happy video of a man bringing flowers to a woman. There was also a sad clip in which a son watches his father die. Both of the videos were designed to elicit an emotional response.

In addition, there was a third video — a boring, unemotional workplace training clip. The participants who watched this unemotional clip did not lose the ability to gauge levels of fat.

So, it seems to be that it’s an emotional reaction, when folks are already a little blue, that causes people to lose the ability to tell high fat from low. The study is published in the journal PLOS One. [Copyright 2013 NPR]

Leave a Reply

12AM to 5AM The Spy

The Spy

An eclectic mix of the Spy's library of more than 10,000 songs curated by Ferris O'Brien.

Listen Live Now!

5AM to 9AM Morning Edition

Morning Edition

For more than two decades, NPR's Morning Edition has prepared listeners for the day ahead with two hours of up-to-the-minute news, background analysis, commentary, and coverage of arts and sports.

View the program guide!

9AM to 10AM The Takeaway

The Takeaway

A fresh alternative in morning news, "The Takeaway" provides a breadth and depth of world, national and regional news coverage that is unprecedented in public media.

View the program guide!

Upcoming Events in your area (Submit your event today!)

Streaming audio and podcasts

Stream KOSU on your smartphone

Phone Streaming

SmartPhone listening options on this page are intended for many iPhones, Blackberries, etc. with low-cost software applications available to listen to our full-time web streams, both News on KOSU-1 and Classical on KOSU-2.

Learn more about our complete range of streaming services

We're perfecting the patient experience - Stillwater Medical Center