November 12, 2011

Expressions Have Major Impact

1 Smile to Look Younger

People may appear younger when they're smiling, suggest researchers in Berlin. Published in Psychology and Aging, the study is the first to show that facial expressions have a big impact on bias or accuracy of age estimates. WebMD reports that researchers showed people photos of happy faces, as well as faces with neutral or angry expressions. Those viewing the happy photos guessed the age of the people in the images as younger compared with photos of the same people who looked angry or neutral. Researchers believe that smiling lends a youthful appearance since it creates temporary wrinkles around the mouth or eyes. It may be difficult to tell the difference between real wrinkles or temporary ones. Also, smiling makes people seem attractive, which could also help create a youthful look.

More at WebMD | Posted 6 years ago by Peggy Rowland

Previously: Dying for a Tan

Tags: Benefits Smiling, Why Smile, Secrets Looking Youthful, Journal Psychology and Aging, Max Planck Institute for Human Development, Accurate Age Estimates

Comment on This | Was this Interesting? Yes! (49%) / No! (51%)

Activated by Injury

2 Stem Cells Present in Spinal Cord Membrane

A new study that involved microdissecting the spinal cords of rats has demonstrated the existence of stem cells in the meninges, the membrane that covers the brain and spinal cord, giving researchers hope that they could be used to help individuals who suffer from spinal cord injuries. Meningeal stem cells can self-renew and proliferate and when a spinal injury occurs, they multiply and go to the site of injury where they form glial scars. It is this activation that leads scientists to believe that they could be used to treat spinal cord injuries that can range from pain to complete paralysis and take a heavy toll in terms of medical cost and quality of life. This discovery will hopefully lead to finding drugs that can activate meningeal stem cells in the same way.

More at Science Daily | Posted 6 years ago by Kristie Hayes

Previously: Spinal Cord Nerve Cells Regenerated in Young Mice

Tags: Brain, Spinal Cord, Spinal Cord Injuries, Meningeal Stem Cells, Meninges

Comment on This | Was this Interesting? Yes! (40%) / No! (60%)

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