A study published in Journal of Impotence Research by researchers of University of California suggests that Pomegranate has blood properties similar to Viagra, and therefore might be used for healing sexual impotence.
However, the researches claims that further studies should be done to prove its efficiency.
Source: BBC Brazil
http://www.bbc.co.uk/portuguese/reporterbbc/story/2007/11/071130_romaimportencia_fp.shtml