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 E-Mail IMAGE: UMD-led study revealed age-related changes to the DNA of bats related to longevity. Clockwise from top left: common vampire bat (G. Wilkinson), greater horseshoe bat (G. Jones), velvety free-tailed bat... view more  Credit: G. Wilkinson, G. Jones, S. Puechmaille, M. Tschapka A new study led by University of Maryland and UCLA researchers found that DNA from tissue samples can be used to accurately predict the age of bats in the wild. The study also showed age-related changes to the DNA of long-lived species are different from those in short-lived species, especially in...

The highly infectious variant of COVID-19 discovered in Kent, which swept across the UK last year before spreading worldwide, is between 30 and 100 per cent more deadly than previous strains, new analysis has shown.

About JAMA Network Open: JAMA Network Open is the new online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system. Share

When the operating room is busy, 20 per cent more hip replacement patients died within 60 days after the operation, a study of Norwegian patients shows.

 E-Mail American adults without a college degree have experienced greater reductions in life expectancy when compared to their more-educated counterparts, USC and Princeton researchers have found. The study reveals that after nearly a century of declining mortality up to the late 1990s, the progress continued into the 21st century for more-educated Americans but stalled for the population as a whole and reversed for the two-thirds of Americans who do not have a college degree. The study appeared Monday in the Proceedings of the National Academy of Sciences. The researchers examined overall...