1. A4M (American Academy of Anti-Aging Medicine). 2002a. Official position statement on the truth about human aging. http://www.worldhealth.net/pages/official_position_statement_on_the_truth . Accessed 19 January 2009.
2. A4M (American Academy of Anti-Aging Medicine). 2008. Introduction to anti-aging medicine. http://www.worldhealth.net/pages/what_is_anti-aging_medicine . Accessed 12 November 2008.
3. Ackermann, Tim. 2009. Schon die Antike kannte den Jugendwahn, Welt Online, 10 March. http://www.welt.de/kultur/article3349306/Schon-die-Antike-kannte-den-Jugendwahn.html . Accessed 6 April 2009.
4. Bartens, Werner. 2008. Tristesse ohne Entrinnen. SZ, 4 February. http://www.sueddeutsche.de/wissen/50/431800/text/ . Accessed 6 April 2009.
5. Bartholomäus, Ulrike, Martin Kunz, and Silvia Sanides. 2007. Weniger essen, länger leben?, Focus, 6 August. http://www.focus.de/gesundheit/gesundleben/antiaging/lifestyle/medizin-weniger-essen-laenger-leben_aid_223986.html . Accessed 7 April 2009.