Does Progesterone Increase Breast Size?

[Dana Lane]

There were two people (me being one of them) who mentioned hormone doses and mods stepped in and set things straight. I see no reason to continue discussing that part of this thread but maybe I am alone. I am really just interested in what progesterone can do to help me or hurt me. Thanks

[Anne Selene]

I did not read all this but when it comes to P we mean P4 which is natural Progesterone and not synthetic versions of it.

One thing we must remember is that genetic woman has good hair growth when they are young and far less when they get older is due to P4 and not to any of the other Estrogens. So ONE important factor is that P4 is the most perfect antiandrogen available and it blocks DHT better than any other medications.

If you really want to test these facts just do this; Talk to your Doctor about Utrogestan. Measure your T, P4 and DHT by your doctor. Take one capsule before bedtime (don't eat anything at least 2h before). On the 10th day you stop taking Utrogestan and then repeat your blood tests. You will then see something unbelievable.

I've done this several times as part of my HRT and for a study made by my endocrinologist and it's clear that P4 should be part of any HRT.

For breast growth I'm not so sure that P4 works because we can't conclude that we really got Progesterone receptors in M2F breasts so argumentation for taking P4 or not should solely be based on if it's the best DHT blocker or not because that is easy to prove and ANYBODY can so easily test and prove these facts BUT be aware that P4 is also an anti-oestrogen agent so if you take P4 also your E2 will drop and that's why you should not take this more then 10 days of the month.

Hope you like these facts ...

_{Dosage removed}

[Muffin]

I agree with most of that Anne but I've also read that you're not suppose to cycle progesterone while pre-op and that progesterone makes the estrogen receptors more sensitive so you don't need as much estrogen while on P.
I think this is the problem there is so much conflicting stories out there... which is true??

[Anne Selene]

Exactly Muffin, in fact I think the only way something becomes anti-estrogenic is by blocking ER1 and ER2 so that's what P4 does in some way as T-blockers blocks T.

[Muffin]

But would the sensitising of the receptors balance that out?? I haven't heard of taking P to lower over all E levels.
I've heard Prometrium to be the best at doing what P is suppose to do and nothing more.. being bioidentical.

[Anne Selene]

Well it's more easy if we say P4 then we know what we are talking about as P can be anything. Prometrium and Utrogestan is all "bioidentical" micronized P4 so it's made easier for the body to process.

I think and this is my opinion that taking P4 at an early stage might benefit breast developments as people tends to take too high doses of oestrogen which in fact would stall breast developments too early and they might end up with too small breasts. Small amount of oestrogen to start with would therefore benefit breast developments and should not be increased before every 6 months or so. To much too quickly might also damage both ER1 and ER2 but again this is just my opinion.