Epithelial Cancer

[Epithelial Cancer related Question]

It is known that both estrogen and testosterone induce formation of new arteries into cancers, just as estrogen induces formation of arteries into the epithelial tissues of the uterus.
We also know that progesterone causes the closing off of those arteries in epithelial tissue at the time of menstruation, causing the epithelial tissue to die and slough off.

When men with prostate cancer have used progesterone cream, they have reported sharp reduction or even cessation of bone pain from metastatic prostate cancer.
Would this suggest that progesterone may, at least in these cases, be acting as an antiangiogenesis agent, causing the cancer to be starved of blood, so starved of food and oxygen?

If so, would it be at all safe to use this while waiting for treatment? How would one know what would be safe or effective dosage?
My doctor, my oncologist acknowledge having heard of use of progesterone treatments, but because they are not part of standard protocols they refuse to discuss.
Antiangiogenesis drugs have been tested and are part of protocols for other cancers, but they will not discuss other than for those in approved drug testing program.

Doctors appear to be the major block in information flow. I am starting to distrust their objectives.

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