Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Expecting a laugh boosts stress-busting hormones

07.11.2002


Study finds expectation of humor has a biological effect on body



Go ahead, laugh. In fact, look forward to the upcoming positive event. It does the body good.

Yes, even looking forward to a happy, funny event increases endorphins and other relaxation-inducing hormones as well as decreases other detrimental stress hormones, a UC Irvine College of Medicine-led study has found.


In previous studies, the scientists found that anticipating a funny video reduced feelings of stress. This study found that those feelings have biological underpinnings and may help researchers combat the harmful effects of stress. The study was presented at the annual meeting of the Society for Neuroscience in Orlando, Florida.

Lee Berk, assistant professor of family medicine and a researcher at the Susan Samueli Center for Complementary and Alternative Medicine, and his colleagues found that just anticipating a funny event reduced levels of stress-causing chemical messengers in the blood, and increased levels of chemicals known to reduce tension.

"Since chronic stress can suppress the immune system’s ability to fight disease, reducing the effects of stress can help the body resist infections and other disorders," Berk said. "This study shows that even knowing you will be involved in a positive humorous event days in advance reduces levels of stress hormones in the blood and increases levels of chemicals known to aid relaxation. This has profound implications for complementary treatment of disease and for maintaining a person’s wellness."

Berk and his colleagues tested 16 men at Loma Linda University. Half of them were informed three days in advance they would watch a humorous video. The men watching the video had a 39 percent decrease in cortisol, a 38 percent drop in dopac and a 70 percent drop in epinephrine, all of which are stress hormones. At the same time, endorphin levels rose 27 percent, and growth hormone levels rose 87 percent. Endorphins and growth hormones are known to reduce the effects of stress and benefit the immune system. These changes were not seen in the other eight men who were told they would not view the funny video.

The levels of stress-inducing hormones increasingly dropped (and for the stress-reducers, rose) at a progressively greater rate as the date of the humorous experiment approached.

Previously, Berk and his team found that anticipating a funny video changed the subjects’ mood states. In addition, Berk has shown that watching humorous videos decreased some stress hormones and increased the activity of specific white blood cells called natural killer cells that specialize in killing virally infected cells and tumor cells.

"The anticipation of a funny event changes mood states, which appears to trigger profound physiological changes in the body," Berk said. "These mood and body changes also lasted well after the actual event. Optimism and expectation or anticipation of positive experiences appear to help in recovery from illness, supporting the reality that there may be a biology to the concept of hope." Berk and his colleagues continue to look at the relationships between mood, behavior and prevention and effective treatment for a wide range of diseases.

Berk’s colleagues in the study include Dr. David Felten, executive director of the Susan Samueli Center for Complementary and Alternative Medicine, and Dr. Stanley Tan of the Oakcrest Research Institute and James Westengard of Loma Linda University School of Medicine.


complete archive of press releases is available on the World Wide Web at www.today.uci.edu.


Andrew Porterfield | EurekAlert!
Further information:
http://www.today.uci.edu
http://www.uci.edu/

More articles from Health and Medicine:

nachricht Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University

nachricht Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Safe glide at total engine failure with ELA-inside

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

New pop-up strategy inspired by cuts, not folds

27.02.2017 | Materials Sciences

Sandia uses confined nanoparticles to improve hydrogen storage materials performance

27.02.2017 | Interdisciplinary Research

Decoding the genome's cryptic language

27.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>