**Author details**

Hassan M. Heshmati Endocrinology Metabolism Consulting, LLC, Anthem, AZ, USA

\*Address all correspondence to: hassanheshmati@yahoo.com

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

*The Centenarians: An Emerging Population DOI: http://dx.doi.org/10.5772/intechopen.96327*
