How to Support Estrogen Dominance

The answer might surprise you...

Welcome to the Gut Honest Truth blog where a Certified Functional Medicine Practitioner gives you digestible information to tackle your chronic health concerns.

That's me, Katie Morra; and in this blog I'm going to break down what estrogen dominance actually is, what drives it, and what you can do to support your hormones through lifestyle, food, and targeted supplementation.

And as always, working one-on-one for your specific needs is always our top recommendation, check out our appointment options to get started with one of our licensed health care professionals today.

What Is Estrogen?

Estrogen is a group of hormones responsible for initiating secondary sexual characteristics during puberty — hips, breasts, pubic hair — and plays an ongoing role in reproductive, heart, bone, skin, and brain health. While estrogen is often associated with female biology, men also produce it in smaller amounts.

There are three primary types of estrogen in women:

Estrone (E1) — the estrogen of menopause. When the ovaries stop making estrogen, the body converts androgens to estrogen via the aromatization pathway. Estrone becomes the dominant form.

Estradiol (E2) — the most potent estrogen during the cycling years. It supports uterine thickness, cervical mucus production, vaginal microflora, bone density, cardiovascular health, and brain function. It has receptors on all immune cells.

Estriol (E3) — primarily produced during pregnancy.

Estrogen levels fluctuate throughout the menstrual cycle: low during menstruation, rising through the follicular phase, peaking just before ovulation, and declining through the luteal phase. The body requires estrogen in the right amounts at the right times. Estrogen dominance is what happens when that balance breaks down.

What Is Estrogen Dominance?

Estrogen dominance describes a hormone imbalance where estrogen is excessive relative to other hormones — particularly progesterone. It can show up in two ways:

Frank estrogen dominance: The body is producing too much estrogen outright — from excess body fat, xenoestrogen exposure, certain medications, or conditions like PCOS.

Relative estrogen dominance: Estrogen levels may be normal, but progesterone is too low relative to estrogen — especially during the luteal phase, perimenopause, or after long-term birth control use. The ratio is off even when the absolute number isn't alarming.

What Drives It?

Excess body weight — Adipose (fat) tissue produces and stores estrogen. Higher body fat leads to higher estrogen levels, particularly after menopause when the ovaries produce less.

Medications — Certain birth control pills and hormone replacement therapies contain synthetic hormones that raise estrogen. Always discuss risks and alternatives with your provider.

Chronic stress — Elevated cortisol interferes with progesterone production, shifting the estrogen-progesterone balance toward dominance even when estrogen itself isn't high.

Xenoestrogens — Synthetic chemicals that mimic estrogen, found in plastics, pesticides, synthetic fragrances, and personal care products. Reducing environmental exposure is one of the most impactful things you can do. See our post on home hygiene and check your products at EWG Skin Deep.

Liver dysfunction — The liver is responsible for metabolizing and clearing excess estrogen. If liver function is impaired — from alcohol, poor diet, toxic burden, or gut health issues — estrogen accumulates rather than being eliminated.

Gut dysbiosis — The estrobolome (a collection of gut bacteria responsible for estrogen metabolism) plays a direct role in how estrogen is processed and eliminated. When gut bacteria are imbalanced, an enzyme called beta-glucuronidase can reactivate estrogen that was packaged for elimination — sending it back into circulation instead. More on this below.

Symptoms of Estrogen Dominance

• Irregular periods or heavy menstrual cycles

• Mood swings, anxiety, or depression

• Breast tenderness or swelling

• Bloating and water retention

• Weight gain, especially around the hips and thighs

• Hair thinning

• Skin issues

• Fatigue

• Low libido

• Difficulty sleeping

• Fibroids or endometriosis

Supporting Estrogen Dominance Through Lifestyle

Daily bowel movements — Stool is one of the primary routes for eliminating excess estrogen. If you're constipated, estrogen gets reabsorbed rather than cleared. This is non-negotiable.

Stress reduction — Chronic cortisol elevation suppresses progesterone production and worsens the estrogen-progesterone ratio.

Better sleep — Sleep deprivation disrupts hormone regulation across the board.

Fiber — at least 25g per day — Fiber binds to estrogen in the gut and supports its elimination. Inadequate fiber is one of the most common and most fixable drivers of estrogen recirculation.

Liver support — The liver runs estrogen through a two-phase detox process before clearing it. Cruciferous vegetables, adequate protein, and B vitamins all support liver function and estrogen metabolism.

Foods That Support Hormone Balance

• Broccoli, broccoli sprouts, cabbage, kale, Brussels sprouts — Rich in sulforaphane and indole-3-carbinol (I3C), which support estrogen detox pathways

• Flaxseeds — Contain lignans that help modulate estrogen activity

• Carrots — Support estrogen clearance via the gut

• Beets and burdock root — Support liver detoxification

• Dandelion root — Supports bile production and liver function

• Grass-fed beef, lentils, eggs — Protein supports liver detox enzymes and hormone production

• Shiitake mushrooms — Support immune modulation

• Avocado — Healthy fats support hormone synthesis

• Blackberries — Antioxidants support detox pathways

Pro tip: Chop broccoli, Brussels sprouts, and cabbage before cooking to release myrosinase — the enzyme that activates sulforaphane and I3C. These compounds require healthy stomach acid to be fully converted in the body.

Understanding Estrogen Detox Pathways and Supplements

Before supplementing, it's essential to understand which phase of estrogen detox needs support — because the wrong supplement at the wrong phase can do more harm than good. This is exactly why we recommend the DUTCH test before attempting any hormone manipulation on your own.

Sulforaphane — Acts as an antioxidant and accelerates phase 2 detox enzymes, facilitating the transition of estrogen metabolites from phase 1 to phase 2. It doesn't directly lower estrogen but opens the detox pathways. Best food source: broccoli sprouts daily.

I3C (Indole-3-Carbinol) and DIM (Diindolylmethane) — When you eat cruciferous vegetables, you consume I3C, which converts to DIM in the stomach's acidic environment (another reason stomach acid matters). DIM supports phase 1 estrogen detox and can redirect estrogen down healthier metabolic pathways. However — DIM can also lower circulating estrogen, so it's not appropriate for people with low estrogen, amenorrhea, or menopause, or if phase 2 and 3 detox pathways are impaired. Don't use long-term without testing.

Calcium-D-Glucarate (CDG) — Supports phase 3 estrogen clearance through stool. When gut bacterial overgrowth increases beta-glucuronidase (an enzyme that essentially snips the packaging off estrogen headed for elimination and lets it re-enter the bloodstream), CDG inhibits that enzyme and allows estrogen to actually clear. This is why gut health and constipation must be addressed first — CDG works downstream of a functioning gut.

For progesterone support: Herbs like chaste tree (vitex), shatavari, maca, evening primrose oil, vitamin C, and B6 may help raise progesterone and rebalance the estrogen-progesterone ratio — which is often the real issue in relative estrogen dominance.

How We Assess This at GHT

We use the DUTCH Complete test from Precision Analytical as our primary hormone assessment tool. It's a dried urine test collected from the comfort of your home that measures sex hormones, adrenal hormones, their metabolites, daily free cortisol pattern, organic acids, melatonin, and oxidative stress markers.

The DUTCH test allows us to see exactly how your hormones are being produced, converted, and eliminated — which phases of detox are sluggish, and where targeted support is actually needed. It's the most comprehensive hormone test available, and it removes the guesswork from supplementation entirely.

For more on the menstrual cycle and how estrogen and progesterone interact throughout it, read: Is My Menstrual Cycle Normal?

Schedule a free discovery call with our team here.