Medical science has come a long way in the 400 years since William Harvey discovered the circulation of the blood. Anaesthetics, an appreciation of the importance of clean water, penicillin and cracking the human genome are but a few of its more notable achievements. So why has Gwyneth Paltrow turned the clock back 5,000 years to the ancient Chinese to find relief for her physical ailments? The actress caused a stir this week when she turned up at a New York film premiere wearing a low-cut black dress and sporting what appeared to be a row of circles on her...