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Children with obesity in a six-month healthy eating and exercise program experienced increases in their average telomere length, suggesting reversal of premature aging, a study led by Stanford Medicine researchers found.

A subset of liver cells with high levels of telomerase renews the organ during normal cell turnover and after injury, according to Stanford researchers. The cells may also give rise to liver cancer.

A new study shows that telomeres shorten without cell division in a mouse model of Duchenne muscular dystrophy. Subsequent DNA damage responses and mitochondrial dysfunction are likely cause of heart failure.