advertisement advertisement advertisement You wouldn't think that creating old, pumped-up mice would pose much of an ethical dilemma. But University of Pennsylvania professor Lee Sweeney was invited to speak before the President's Council on Bioethics a few years ago because that's exactly what he does. The commission, created by George W. Bush to map out the moral and ethical consequences of advances in medicine and biotechnology, heard Sweeney describe his research into ways of turning back the rodents' biological clock, reversing the deterioration of muscle caused by aging and even degenerative diseases. The treatments, Sweeney explained, had all but halted, and in some cases reversed, the age-related decline in mouse muscle. Essentially, he'd given a 27-month-old mouse (age 80-plus in human years) the body of a 6-month-old. advertisement advertisement But Sweeney is not building his buff little Mus musculus with a new drug or physical therapy. He's injecting them with genes, extra copies of the very gene that causes our own bodies to develop muscle mass. And his research points the way not only toward a possible slowing of diseases like Lou Gehrig's but to a way of giving perfectly healthy men and women bigger and stronger muscles–permanently, after just… Read full this story
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