starr802 writes "A biological clock capable of determining how old different human tissues and cells are has been discovered by a team of researchers from the University of California Los Angeles (abstract). 'To fight aging, we first need an objective way of measuring it. Pinpointing a set of biomarkers that keeps time throughout the body has been a four-year challenge,' Steve Horvath, a professor of human genetics at the David Geffen School of Medicine at UCLA and of biostatistics at the UCLA Fielding School of Public Health said in a statement. 'My goal in inventing this clock is to help scientists improve their understanding of what speeds up and slows down the human aging process.'"
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