Two artificial big toes — one found attached to the foot of an ancient Egyptian mummy — may have been the world’s earliest functional prosthetic body parts, says the scientist who tested replicas on volunteers.
University of Manchester researc…
An amino acid supplement called L-tyrosine, recommended by fitness trainers and sold by supplement outlets as an endurance booster, has no effect on endurance, according to a new Brigham Young University study. “There wasn’t any indication from our tests that tyrosine had an effect in the blood or in the brain,” said Allen Parcell, assistant professor in the Human Performance Research Center at BYU. “Tyrosine didn’t improve endurance performance in our subjects.”