checked
Eternal youth and endless bliss have always been vital human dreams. Promising parabiosis research indicates that we may come closer to these dreams than ever. It is yet too early to foresee how parabiosis will move from bench to bed. The life-renewing philosopher's stone may turn out to be as hard to find in blood as elsewhere. Although it is far too early to assess the implications for clinical practice, for health policy, and for society, we should start our reflections on filling the holy grail with blood now, before our technical skills outpace or dominate our deliberations.