
Treating Parkinson’s Disease with stem cells: plausible versus magical therapies
New medical technologies and the evidence gap New medical technologies are particularly appealing to those with incurable disease and those searching for the fountain of youth. However, there is often an evidence gap - the time between the discovery of a new technology and when it is finally tested and understood. Use of a medical technology in this gap without evidence can lead to disastrous results. Radiation, for example, was shown to have anti-cancer properties when first