- Q What are stem cells?
Dr. Michael Roizen, Internal MedicineOne of the hottest political issues of the last few years has revolved around stem cell research. Stem cells are the initial cell that all other cells can be made from-they have multiple potentials: a stem cell can turn into a heart cell or a brain cell... Full Answer
- Q Are the mechanisms that evolved to protect our species harmful?
Dr. Dean Ornish, Internal MedicineYou are living in a world to which your mind and body have not yet had time to adapt. The human body evolved a number of exquisitely complex mechanisms that were designed to help the species survive. But evolution of the body is a gradual process, one... Full Answer