Stress hormone cortisol to help overcome phobias

Mar 29, 2011 by Deborah Braconnier report

(PhysOrg.com) -- In a recent study published in the Proceedings of the National Academy of Sciences, researchers are showing the potential benefit of using the stress hormone Cortisol in addition to exposure therapy to help patients overcome phobias.

Current treatment utilizes what is known as exposure therapy. Patients are exposed to their fear in safe environments in the hopes to replace fearful memories.

Cortisol, a hormone which is released during , has also been shown to affect the learning process. The hope of the study is that, when used with current exposure therapy treatment, the Cortisol will help to generate new memories of the experience and block the memories of being frightened.

Led by cognitive neuroscientist Dr. Dominique de Quervain from the University of Basel in Switzerland, researchers worked with participants suffering from acrophobia, or the fear of heights.

The researchers tested 40 patients with a fear of heights. The patients were put through three sessions of in a virtual-reality based format. The particular situation used was that of an outdoor elevator ride. Half of the participants were given a Cortisol tablet one hour before their session while the other half received a placebo.

Participants were questioned and measurements of the electrical conductance of their skin were taken at four days and once month after the final session. Researchers found that those participants who had been administered the Cortisol saw a much greater decrease in fear and anxiety when exposed to heights.

The level of fear showed an average drop of 60 percent in those administered the , compared to only a 40 percent drop with those receiving the placebo.

Further studies are going to be required and this is just the beginning. De Quervain hopes that eventually this combination of psychotherapy and pharmacotherapy can be used to treat more phobias such as post-traumatic stress disorder (PTSD), social phobias, and obsessive-compulsive disorder.

Explore further: Lost memories might be able to be restored, new study indicates

More information: by Dominique J.-F. de Quervain, Glucocorticoids enhance extinction-based psychotherapy, Proceedings of the National Academy of Sciences, Published online before print March 28, 2011, doi: 10.1073/pnas.1018214108

Related Stories

Protected fear memories

Sep 11, 2009

(PhysOrg.com) -- In the latest issue of Science, researchers from the Friedrich Miescher Institute for Biomedical Research, Switzerland, show how a class of proteins surrounding nerve cells allows fear memories to persis ...

Easing the stress of trauma

Dec 01, 2008

Post-traumatic stress disorder (PTSD) affects as many as one in five of all Americans who survive a harrowing experience like rape, assault, war or terrorism. It has emotionally paralyzed survivors of 9/11 and broken up survivors' ...

Recommended for you

Researchers unlock mystery of skin's sensory abilities

Dec 19, 2014

Humans' ability to detect the direction of movement of stimuli in their sensory world is critical to survival. Much of this stimuli detection comes from sight and sound, but little is known about how the ...

Tackling neurotransmission precision

Dec 18, 2014

Behind all motor, sensory and memory functions, calcium ions are in the brain, making those functions possible. Yet neuroscientists do not entirely understand how fast calcium ions reach their targets inside ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.