Yes, you can stream Netflix—and your body can stream stem cells. In fact, this is the up-to-the-minute thinking about how stem cells work. Here is the latest from the recent International Cartilage Repair Society meeting on stem cells, growth factors, bone marrow, fat, and PRP.

“My veterinarian gave my horse (or dog) glucosamine, and the animal stopped limping, so I started taking it and I feel less stiff. But I sure hate those big horse pills!”

What we think we know is probably not true. If we are practicing medicine the same way next year as we are practicing this year, we clearly haven’t learned anything.