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External testosterone from TRT after a while, might increase estrogen levels from aromatization which needs to be countered. Too much estrogen can lead to side effects such as gynecomastia or male breasts, high water retention among other side effects.
Men are from Mars and women might be from Venus, but hey, we all share the same hormones, but in different proportions. Estrogen (E) is also crucial for men’s health as much as women’s though. Maintaining hormonal balance of different hormones as nature intended while optimizing deficits should be the goal of TRT for men.
One of the reasons TRT patients are monitored diligently at ON MEN via blood work and quarterly check ups is also to monitor estrogen levels. Means not eliminating estrogen from the body, but making sure the proper proportions of hormones are maintained for optimum health.
Testosterone is the most significant hormone for male sexual development and function. Naturally in males, testosterone levels decline with age, and estrogen levels increase. When large fluctuations of testosterone production occur, such as when anabolic steroids are injected, this creates an imbalance of hormones in the body. The body then corrects such an imbalance by aromatization or converting testosterone into estradiol, a form of estrogen.
Higher the levels of anabolic steroids imbibed, higher amounts of estrogen synthesized. Bodybuilders inject high doses of anabolic steroids, hence the aromatization of testosterone into estrogen is also very high.
Estrogen is synthesized from testosterone. TRT over a period increases testosterone which can lead to excess estrogen in men which is not a good thing.
Aromatization is the biochemical process in which an aromatase enzyme catalyzes or speeds up the conversion of testosterone into estradiol, the fundamental pathway for the synthesis of estrogens.
Estradiol is crucial to male sexuality. If estradiol is not in balance with testosterone, problems will start to be noticed with sex drive, the ability to have an erection, and the production of sperm. High estrogen levels in males also increase risk of other conditions such as diabetes and cancer.
Estrogen is also crucial for executive functioning, impulse control, intelligence, controlling anti-social behavior as well as bone health. In fact, it is produced in skin, brain and penis in a man’s body which shows that it plays an important role in man’s health as well. But over-production of estrogen is counter-productive to TRT.
Obesity – Obese men may convert the testosterone from TRT into estrogen, which will actually reduce the benefits of testosterone replacement.
High levels of E in the body is corrected by reducing Luteinizing Hormone(LH) and Follicle Stimulating Hormone(FSH) secretion. These two are crucial for natural synthesizing of testosterone and sperm generation. Means high E will actually reduce natural testosterone production in the body.
And then there is this aromatase gene which naturally produces excess E in some men. TRT has to be administered with estrogen blockers for such cases.
Estrogen blockers are also known as Aromatase inhibitors. Usual meds prescribed are:
While excess E needs to be controlled, abusing estrogen blockers by taking OTC dubious preparations, supplements, herbs is counter-productive to one’s health since estrogen has an important role in men’s health. A trained clinician is best left on deciding medication.