Why these Amish live longer and healthier: An internal ‘Fountain of Youth’. The first genetic mutation that appears to protect against multiple aspects of biological aging in humans has been discovered in an extended family of Old Order Amish living in the vicinity of Berne, Indiana, report scientists. An experimental “longevity” drug that recreates the effect of the mutation is now being tested in human trials to see if it provides protection against some aging-related illnesses. Source 5t.