Ejaculation healthy for the prostate gland?

http://www.medscape.com/viewarticle/861284?src=wnl_tp10n_160509_mscpedit_ous&uac=7267HX&impID=1087420#vp_2

And those news about less invasive and more predictive screening methods for prostate cancer:
http://www.wsj.com/articles/a-better-prostate-cancer-test-1462819119