High Oestrogen in Men
Why It Happens, What It Does, and How to Restore Hormonal Balance
Most men are aware that testosterone matters for health — but very few know that oestrogen is equally important, and that too much of it causes a distinct set of problems that are often misdiagnosed or overlooked entirely.
Men Have Oestrogen — And They Need It
The oestrogen family includes several hormones, but the one most relevant to male health is oestradiol (E2). In the right amounts, oestradiol supports bone density, cardiovascular health, libido, and cognitive function in men. The problem arises when oestradiol rises too high — a condition increasingly common in modern life due to environmental, dietary, and metabolic factors.
Men who also suffer from low testosterone should be aware that the two issues are often linked. You can read more about the combined effect in our guide on low testosterone in men over 40.
What Causes Oestrogen to Rise in Men?
The Aromatase Connection
The primary pathway for high oestrogen in men is aromatase — an enzyme that converts testosterone into oestradiol. Fat cells are particularly rich in aromatase, which is why excess body weight is the single biggest driver of elevated oestrogen in men. As oestrogen rises, it can further suppress testosterone production, creating a self-reinforcing cycle.
Other contributing factors include:
- Alcohol consumption — the liver metabolises oestrogen, and alcohol impairs liver function
- Environmental oestrogens (xenoestrogens) — found in plastics (BPA), pesticides, and some personal care products
- Certain medications — including some antibiotics, antifungals, and heart medications
- Phytoestrogens — plant-based compounds in soy and flaxseed that mimic oestrogen at receptor sites
- Hypogonadism — impaired testicular function alters the testosterone-to-oestrogen ratio
Symptoms of High Oestrogen in Men
Short-Term Signs
- Gynecomastia (breast tissue development)
- Water retention and bloating
- Erectile dysfunction
- Reduced sex drive
- Emotional sensitivity and mood swings
Long-Term Risks
- Reduced bone density
- Cardiovascular complications
- Infertility
- Increased risk of certain cancers
- Metabolic syndrome
Restoring Balance: Practical and Medical Approaches
The most powerful lifestyle intervention is body fat reduction — every kilogram of visceral fat removed meaningfully reduces aromatase activity. Strength training also helps by increasing androgen receptor density and improving insulin sensitivity.
From a nutritional standpoint, cruciferous vegetables (broccoli, cauliflower, Brussels sprouts) contain indole-3-carbinol, which supports healthy oestrogen metabolism. Reducing alcohol and avoiding plastics where possible also removes unnecessary oestrogen load.
When sexual function is affected alongside hormonal imbalance, it’s worth exploring how focused shockwave therapy for erectile dysfunction can support recovery independently of hormone levels.
A Word on Testing
Oestrogen imbalance in men is diagnosed through a sensitive oestradiol blood test, not the standard oestrogen panel used for women. Always ensure your clinician is using the correct assay — results can vary significantly between test types.