http://www.youtube.com/watch?v=ZYhZMsvBWSU
"Sciences proves that ejaculating more often reduces your risk of CANCER?! A Urologist explains."
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If this becomes an FDA approved preventative, maybe hobbying will be covered by insurance!  
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(Lots of videos on this topic but this one had the prettiest urologist.)
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"Ejaculation Frequency and Risk of Prostate Cancer: Updated Results with an Additional Decade of Follow-up." European Urology, Volume 70, Issue 6, December 2016, Pages 974-982. (From 2016: A little old, but does ejaculating ever get old?)