Stem cell research is a long-standing subject. Quite a lot is known for stem cells. But their massive use in medicine is a novelty of recent times. This area of medicine is developing rapidly. Appears many clinics in various countries around the world. Clinics promise a solution to many problems. It begins with the rejuvenation of the body. Everyone wants to rejuvenate for 5 - 10 - 15 years. Why not? The declarations end with the promise of treating a large number of diseases that were previously considered not measurable. How to get correct information on the current level of development of stem cell medicine? What are the proportions of science, commerce and mythology in modern knowledge about stem cells and their use for medical purposes?