Tabriz University of Medical Sciences BioImpacts 2228-5652 7 3 2017 08 10 Debate on human aging and lifespan 135 137 10.15171/bi.2017.16 EN Mohammad A. Rafi Abass Alavi Journal Article 10.15171/bi.2017.16 2017 08 03 2017 08 16 The issue of human lifespan has long been a matter of controversy among scientists. In spite of the recent claim by Dong et al that human lifespan is limited to 115 years, with the mounting improvements in biotechnology and scientific understanding of aging, we may be confident that aging will slow down over the course of the current century extending human longevity much longer than 115 years.