Friday, December 11, 2009
Thursday, December 3, 2009
Sunday, November 22, 2009
Why Exercise Makes You Less Anxious
Phys Ed: Why Exercise Makes You Less Anxious - Well Blog - NYTimes.com
In the experiment, . . . scientists allowed one group of rats to run. Another set of rodents was not allowed to exercise. Then all of the rats swam in cold water, which they don’t like to do. Afterward, the scientists examined the animals’ brains. They found that the stress of the swimming activated neurons in all of the brains. (The researchers could tell which neurons were activated because the cells expressed specific genes in response to the stress.) But the youngest brain cells in the running rats, the cells that the scientists assumed were created by running, were less likely to express the genes. They generally remained quiet. The “cells born from running,” the researchers concluded, appeared to have been “specifically buffered from exposure to a stressful experience.” The rats had created, through running, a brain that seemed biochemically, molecularly, calm.
Sunday, September 27, 2009
Friday, September 11, 2009
World's oldest person dies in Los Angeles at 115
The Associated Press: World's oldest person dies in Los Angeles at 115
LOS ANGELES — Gertrude Baines, the world's oldest known person, died Friday at a nursing home. She was 115.
Baines likely suffered a heart attack but an autopsy will be conducted to confirm the cause of death, said her longtime physician, Dr. Charles Witt.
"I saw her two days ago, and she was just doing fine," Witt told The Associated Press. "She was in excellent shape. She was mentally alert. She smiled frequently."
Born in 1894 in Shellman, Ga., Baines claimed the title of the world's oldest living person when a 115-year-old woman, Maria de Jesus, died in Portugal in January.
The oldest person in the world is now Kama Chinen, 114, who lives in Japan, according to Dr. L. Stephen Coles of the Gerontology Research Group, which tracks claims of extreme old age. Chinen was born May 10, 1895, Coles said.
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