The Hormone Men Get Wrong

Estrogen is not a female hormone. It is a human hormone. Men produce it every day through aromatisation of testosterone. And the consequences of having too little estrogen are at least as severe as having too little testosterone.

Bone Density

Estrogen is the dominant regulator of bone metabolism in both sexes. In elderly men, estradiol correlates more strongly with bone mineral density than testosterone. Low estradiol (below 15-20 pg/mL) is associated with a 2.5-fold increase in fracture risk.

Cardiovascular Protection

Estrogen provides vasodilation through nitric oxide production, improves lipid metabolism, reduces inflammation, and prevents atherosclerosis. Men with congenital aromatase deficiency show elevated cardiovascular risk despite normal testosterone.

Brain Function

Estrogen supports synaptic plasticity, memory formation, serotonin/dopamine modulation, and neuroprotection against oxidative stress.

Sexual Function

Estrogen is required for normal libido, erectile function, and sperm maturation. Suppressing estrogen impairs the sexual function men are trying to enhance.

The Goldilocks Zone

Too low (< 15-20 pg/mL): bone loss, cardiovascular risk, cognitive impairment, reduced libido. Too high (> 40-50 pg/mL): gynaecomastia, water retention, mood instability. Optimal: 20-35 pg/mL.

What Drives Imbalance

Elevated: excess body fat, alcohol, TRT without monitoring, xenoestrogens. Low: excessive aromatase inhibitor use, very low body fat, age-related decline.

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At Genoryx, we evaluate the complete hormonal ecosystem — not just testosterone in isolation. Book a consultation and get the complete picture.