The efficacy of TA-65 is incremental. It does seem to stop telomere shortening and minutely lengthen telomeres, but not in the profound way that future drugs will. One natural compound that may prove more powerful and more affordable may be available by the time this book is published. You can find updates on it (not allowed to give a link) Still, TA-65 us currently being used by the authors of this book, and Dr. Woynarowski is one of the physicians who is licensed to distribute it.