Significant relationship between mortality and telomere length discovered
From
Eurekalert – A team of researchers at Kaiser Permanente and the University of California, San Francisco (UCSF) has identified a significant relationship between mortality and the length of telomeres, the stretches of DNA that protect the ends of chromosomes, according to a presentation on Nov. 8 at the American Society of Human Genetics 2012 meeting in San Francisco.
- individuals whose telomeres were in the shortest 10 percent were about 23 percent more likely to die in the three years following measurement of their telomeres, when compared with individuals whose telomeres were longer
While a reduction in telomere length is regarded as a biomarker of aging, scientists have not yet determined whether it plays a direct causal role in aging-related health changes and mortality or is just a sign of aging.
In their prospective study of 100,000 multi-ethnic individuals whose average age was 63 years, the researchers determined that an association between telomere length and mortality existed and persisted even after the data were adjusted for such demographic and behavioral factors as education, smoking and alcohol consumption, said Catherine Schaefer, Ph.D., director of the Kaiser Permanente (KP) Research Program on Genes, Environment and Health (RPGEH).
Science News – The 10 percent of people with the shortest telomeres had a more than 20 percent higher risk of dying than people with longer telomeres, Catherine Schaefer, an epidemiologist who directs the Kaiser Permanente Research Program on Genes, Environment and Health, reported November 8 at the annual meeting of the American Society of Human Genetics. “It seems as though once your telomeres get critically short, your risk of dying goes up,” she said. The increased death risk is about the same as for people who drink 20 to 30 alcoholic beverages per week or smoke for 20 to 30 years. “It’s a modest increase, but it’s not nothing.”
See more and subscribe to NextBigFuture at 2012-11-12 19:02:38 Source: http://nextbigfuture.com/2012/11/significant-relationship-between.html
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