Editing Life extension (section)

===Scientific controversy===
Some critics dispute the portrayal of aging as a disease. For example, [[Leonard Hayflick]], who determined that [[fibroblast]]s are limited to around 50&nbsp;cell divisions, reasons that aging is an unavoidable consequence of [[entropy]]. Hayflick and fellow [[biogerontologist]]s [[S. Jay Olshansky|Jay Olshansky]] and Bruce Carnes have strongly criticized the anti-aging industry in response to what they see as unscrupulous profiteering from the sale of unproven [[anti-aging supplements]].<ref name="PositionStatement">{{cite journal | vauthors = Olshansky SJ, Hayflick L, Carnes BA | title = Position statement on human aging | journal = The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences | volume = 57 | issue = 8 | pages = B292–B297 | date = August 2002 | pmid = 12145354 | doi = 10.1093/gerona/57.8.B292 | doi-access = free | citeseerx = 10.1.1.541.3004 }}</ref><!--This may be a good place to link into the broader social debate on life extension ethics. Hayflick is not the only one to object to the portrayal/treatment of aging as a disease. Many doctors, social scientists, feminists, etc. do-->