Some US scientists warned Friday that the full-body, graphic-image X-ray scanners now being used to screen passengers and airline crews at airports around the country may be unsafe.
“They say the risk is minimal, but statistically someone is going to get skin cancer from these X-rays,” Dr Michael Love, who runs an X-ray lab at the department of biophysics and biophysical chemistry at Johns Hopkins University school of medicine, told AFP.
“No exposure to X-ray is considered beneficial. We know X-rays are hazardous but we have a situation at the airports where people are so eager to fly that they will risk their lives in this manner,” he said…More…
Researchers looking at almost a thousand mummies from ancient Egypt and South America found only a handful suffered from cancer when now it accounts for nearly one in three deaths.
The findings suggest that it is modern lifestyles and pollution levels caused by industry that are the main cause of the disease and that it is not a naturally occurring condition.
The study showed the disease rate has risen dramatically since the Industrial Revolution, in particular childhood cancer – proving that the rise is not simply due to people living longer…More…
People who sleep poorly or do not get enough sleep have higher levels of inflammation, a risk factor for heart disease and stroke, researchers have found.
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Individuals who reported six or fewer hours of sleep had higher levels of three inflammatory markers: fibrinogen, IL-6 and C-reactive protein. In particular, average C-reactive protein levels were about 25 percent higher (2 milligrams per liter compared to 1.6) in people who reported fewer than six hours of sleep, compared to those reporting between six and nine hours.
That difference was still significant even when the data is corrected for known risk factors such as smoking, blood pressure, diabetes and obesity, [researcher Dr. Alana] Morris says…More…
Meditation to Improve Cell Health (Futurity.org)
Positive psychological changes that occur during meditation training increase activity of telomerase, an enzyme important for the long-term health of cells in the body.
The effect appears to be attributable to psychological changes that increase a person’s ability to cope with stress and maintain feelings of well-being, according to a new study.
“We have found that meditation promotes positive psychological changes, and that meditators showing the greatest improvement on various psychological measures had the highest levels of telomerase,” says Clifford Saron, associate research scientist at the University of California, Davis…More…
Mind Is a Frequent but Not Happy Wanderer (ScienceDaily)
People spend 46.9 percent of their waking hours thinking about something other than what they’re doing, and this mind-wandering typically makes them unhappy. So says a study that used an iPhone web app to gather 250,000 data points on subjects’ thoughts, feelings, and actions as they went about their lives.
The research, by psychologists Matthew A. Killingsworth and Daniel T. Gilbert of Harvard University, is described in the journal Science.
“A human mind is a wandering mind, and a wandering mind is an unhappy mind,” Killingsworth and Gilbert write. “The ability to think about what is not happening is a cognitive achievement that comes at an emotional cost”…More…