Well, GnRH agonists are used to block puberty as well as in male-to-female transexuals:
http://en.wikipedia....ki/GnRH_agonist
wiki: GnRH is Gonadotropin-releasing hormone, also known as Luteinizing-hormone-releasing hormone (LHRH) is responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary. GnRH is what initiates puberty.
I am getting really interested in hormones influencing development and aging. Unfortunately, I have not studied endocrinology yet and anticipate a very steep slope ahead. This does not prevent an idea germinating in my head:
This thread gave me the hunch that the hormone replacement therapy (HRT) for both men and women past middle age is all wrong. I think the right thing to do --for longevity-- is to try to replicate the hormonal panel of a prepubescent adolescent (and not that of a sexually active adult). I also believe the reason why this mistake is repeatedly being made is, of course, because sexuality has such a strong hold on males and they are the ones who still set the goals for society (and also on this board). I personally see young males as unaware victims of their own sex hormones. Nature plays them like puppets and it takes
a break from the pull of her strings to realize this. But such a break is seen as a very threatening preposition by most, especially the most badly afflicted, iow those who measure their success and fitness by the bulk of their muscles and frequency and size of their erections -- which, of course is just another characteristic of their raging sex hormones. It seems there is no easy way out of this loop; Nature literally holds them by their balls lol. Luckily, women are not quite as badly afflicted (we have breaks now and then and that's when we start seeing sex hormones and the hold they have on us for what it is: sheer slavery). But I digressed, sorry

In lieu of good grasp of endocrinology, at the moment, the only support to my idea I find in some of Chinese qigong practices based on the old Daoist tradition. I realize that this says nothing to those who have never heard of it, let alone had a chance to give it some thought.. still, most have probably heard of Dao De Jing (this is the modern pinyin spelling) and remember the lines about being like a child. Also, I had a fortune to study one such method, called Child Longevity Qigong; and there practitioners are invited to experience the attitude and feelings of a child (even though the age there is 6-7 y and not 11-12).
The other support to my idea I see in some traditional women practices (like in
Immortal Sisters: Secrets of Taoist Women by Thomas Cleary). There, to achieve 'immortality', a woman must 'slay the red dragon' (=stop menstruation); and if she is already past menopause, she must first 'start the red dragon' and then 'slay it' (= resume menstruating and then stop it). I should go back to Cleary and see what herbs were mentioned there in support of the main method, which is meditation (= qi is moved along certain channels in prescribed pattern).
Speaking 'hormonally', I believe that these old 'immortality' practices in fact worked on hormones. Of course, there is no 'studies' that would confirm or deny this (also 'immortality' in the Daoist tradition is what in modern times is understood as the quest for extreme longevity -- just what this board is all about). Now, returning to HRT, the current method is to supply estrogen and progesterone for women or testosterone for men, but I think that the right thing to do is to make GnRH stop altogether and supply progesterone only, like it is in a prepubescent adolescent (-? I hope I got it right, I have lots of reading ahead). And of course there is no reason to wait for the age-associated decline in sex hormones; one can start any time. I wonder what you guys think about this and would very much appreciate any clues and ideas about this that you could share. Thanks