Women have given HRT a fair trial and rejected it. Not to take their HRT is almost as bad as smoking. Why, they will get heart disease like men do (though probably fewer thrombo-embolic disorders). They will die younger without HRT, goes the argument, which does not go so far as to point out that this represents a valuable service for the public health authorities. It is unthinkable that women would not be delighted to live out their lives dependent upon chemotherapy supplied at a price by the pharmaceutical biochemical superpowers.

Modern women are much more highly estrogenized than their recent ancestors. An zoologist from Oxford calculated that over a mere 200 years the average number of menstrual cycles experienced by a European woman in her lifetime had increased from about thirty to 450. Her calculation is based upon the menarche’s occurring earlier and upon the infrequent pregnancies that modern women can expect to carry to term together with shorter periods of lactation. If we add to this the artificially estrogenized condition of modern woman post-menopause we end up with an astonishing 600 or so cycles. There is no precedent in the history of the human female for the raised and sharply fluctuating levels of circulating steroid hormones that we endure but, as we did not know what made the nineteenth-century female feel well or even if she felt well, we can hardly guess whether the modern women is better or worse off because of her vastly altered endocrinology. Only the rising cancer figures tell us that she is worse off.

How you answer the question, whether individuals should be persuaded to live their whole lives in a state of chemical dependency, first upon contraceptive steroids and then on replacement therapy, depends upon your regard for the autonomy of the individual. If men would not live their lives this way, why should women? Even though all teenagers should by now be convinced that condoms should be their contraceptives of choice, British physicians have begun lobbying for the right to prescribe synthetic sex steroids to women under sixteen. The caponized woman is now the norm.

They went back to natural estrogen, a cumbersome and expensive product, harvested from the urine of pregnant mares. The mares are fitted with a collection cup attached to a hose and confined in a narrow stall for the entire eleven months of their pregnancy. As soon as possible after the birth of their foals, who are routinely slaughtered, the mares are re-impregnated and the urine-collection process begins again.

If the pharmaceutical companies were to get women hooked the best time was at menopause when they were in estrogen withdrawal and begging for a fix. At least that was what the researchers thought that hot flushes, joint pains, sleeplessness, etc., added up to. The new mixtures were the methadone rather than the heroin. For some reason the women did not stay hooked. The selling and the product design were relaunched time and again. Sub-dermal implants seemed to lose their effectiveness; women required bigger closes, the implants became ineffective more quickly, menopausal symptoms recurred at shortening intervals. The manufacturers of sex steroid preparations, like the manufacturers of cigarettes, had what they wanted, addiction, and they were just as unwilling to talk about it. An underground network of pushers w-as set up; women, all users themselves, held HRT parties, bring-and-buy sales and coffee mornings, to spread awareness so that women would ask their doctors to prescribe.

Women who take estrogen definitely tend to look younger than their years. Their skin remains smoother, moister, oilier and more flexible – in other words younger. That doesn’t mean you should take estrogen for cosmetic purposes alone. Younger-looking skin is just one of the magical consequences of HRT that researchers have been unable to substantiate; as far as laboratory investigations can establish, exogenous estrogen has no effect on the epidermis or supporting structures.

Adult females make it themselves out of cholesterol converted by their gonads and their adrenal cortex first into progesterone, then into testosterone and then into estrogen. The ovaries carry on producing estrogen long after ovulation has ceased, more than twelve years in fact. The adrenal glands atop the kidneys produce estrone to boost it; all steroid hormones are lipophilic, that is, soluble in fats and easily diffused through membranes. They bind with intracellular receptor proteins and the resultant complex binds to DNA. The scale of effects of this process is as yet hardly glimpsed. What we know and are prepared to say is that ‘estrogen lifts our moods and gives us a feeling of well-being’. It probably does that by influencing some of the neuropeptide transmitters in the brain that regulate how we feel and think, probably oxytocin and vasopressin, together with the enkephalins and dynorphins, opioids produced in the brain.

Oxytocin is particularly interesting not only because it can be shown to have specific functions connected with arousal and orgasm in both males and females, but because neurons containing oxytocin receptors have been found in regions of the brain that suggest a role in bonding behavior. Such data might give the impression that personality is a simple bio-chemical cocktail and can be changed just by upping some part of the mixture. In fact the cocktail has some 4,000 elements that are continually being shaken and stirred; the overall and ultimate effects of adding a jigger of something new are unknowable.

The sex hormones estrogen and progesterone are closely related to anabolic steroids and, like them, affect mood and behavior. People suffering disruptions of their normal biochemical balance will report personality disturbances. The behavioral effects of added estrogen are difficult to quantify; estrogen will not increase libido, for example, as it exerts little action on the clitoris, but it does increase receptivity in that it controls the vaginal environment.

We know enough to know that sex steroids are powerful and that they have complex interactions with other substances, which would seem to be good reason not to introduce similar substances that would replicate or exaggerate or annihilate any part of the wonderfully intricate sequence. In the case of recreational drugs reasonable people are only too ready to accept the idea that interference is foolhardy; when it comes to exogenous estrogen, which is a drug like any other, we are suddenly undisturbed by the prospect of lifelong dependency. Estrogen is now being tried and found effective as a mood-altering substance; it has been used successfully as a symptomatic treatment for severe post-natal depression.