Scientists have invented a panacea which may expand the life span of human being. A group of researchers of University of Southern California Dornsife College of Letters, Arts and Sciences has revealed a report in this regard. Journal of Gerontology: Biological Science has published this report. The report shows that the new medicine Mifepristone may bring unprecedented success for the human being and other species. Applying this drug on the body of flies it has been found that the life span of female flies that interact with male flies has been increased. At that time their fertility decreased while their immunity has been increased. Researchers hope that same thing will happen in case of human being after applying this medicine upon them. If this endeavor becomes success, are the human beings going to live long or be immortal?