Antibiotics prevent cancer spread?

Apparently whenever I mention something in this blog, the universe responds by sending me more...wish I had known this when I was in high school, I would have mentioned a few young ladies (if I had a blog in high school...and if we had the internet...and computers...uh oh, getting depressed here).

Yesterday I received two more health newsletters I've never seen before, and both were offering breakthrough miracles, one of which had to do with prostate health. I do read any article that mentions prostate cancer and, once again, I learned something, maybe.

One newsletter heralded tetracycline for those with either breast or prostate cancer. The claim is tetracycline prevents these cancers from spreading to bones. A cheap, readily available prophylactic for bone cancer...if valid, that's important information (if not, it's exceedingly cruel offering false hope). I'm certainly eager to hear from anyone who might shed additional light.

A study reported in the media today linked circumcision with reduced likelihood of developing prostate cancer. Within the report, it was mentioned that the number of circumcisions are declining and the reported cases of prostate cancer are climbing. Without seeing the study, I have to wonder if this is correlation rather than cause and effect?

The same study reports males circumcised before having sex are 15% less likely to develop prostate cancer;  I wonder if this means immediately before (ouch)?