Recently, an increasing number of studies have suggested that V. segetalis extract has various bioactivities, such as prolactin- (PRL-) like, estrogen-like, antitumor, antiangiogenesis, and antioxidant activity, and it is also shown to dilate blood vessels and relieve osteoporosis (Li-Fan and Liang, 2007). This evidence concerns the gene PRL and osteoporosis.