How to Solve Estrogen Dominance

Estrogen dominance refers to a chronic imbalance between estrogen and progesterone, in which estrogenic signaling outweighs progesterone’s opposing effects. While estrogen is meant to be dominant at specific points in the menstrual cycle, problems arise when estrogen exposure remains elevated for too long or when progesterone levels are insufficient to counterbalance it.

In modern life, estrogen exposure is higher than ever due to stress, environmental chemicals, metabolic slowdown, chronic inflammation, poor sleep, and suppressed thyroid function. At the same time, progesterone production is declining earlier and earlier in women.

It often shows up as:

– Fluid retention and bloating

– Cold sensitivity and fatigue

– Brain fog and mood instability

– Breast pain, fibrocystic changes, and circulation issues

– Thyroid suppression and slowed metabolism

What factors are contributing to estrogen dominance?

• Early puberty, leading to higher lifetime exposure to estrogen
• High body fat, which produces estrogen via aromatase
• Hormonal contraceptives that contain estrogen or synthetic progestin
• Higher exposure to endocrine-disrupting chemicals (cosmetics and personal care products)
• Higher rates of hypothyroidism
• Stress, which increases estrogen production
• Diets high in estrogenic foods like seed oils, nuts, seeds, and soy
• Aging, which results in lower progesterone production

Unfortunately, estrogen levels aren’t always well captured by standard blood tests. A large portion of estrogen is tissue-bound, not freely circulating in the bloodstream. This means blood labs can look “normal” while estrogen is actively accumulating and exerting effects in tissues like the breasts, uterus, brain, fat, and blood vessels.

Estrogen dominance is not a one-lever problem. It has two distinct but inseparable sides:

1. Excess estrogenic exposure
2. Insufficient progesterone exposure

Solving Estrogen Exposure

Healthy body weight and diet corrections:

• Adipose tissue is not inert storage; it is an active endocrine organ.
• Fat tissue expresses aromatase, the enzyme that converts androgens into estrogen.
• Higher fat mass increases continuous estrogen production, independent of ovarian output.
• An important way to do this is by lowering PUFA (polyunsaturated fat) consumption. PUFAs can actually be estrogenic.

Efficient estrogen clearance (liver + gut):

• Estrogen is metabolized primarily by the liver and excreted through bile.
• This process requires:
  • Adequate glucose (liver glycogen)
  • Sufficient protein for conjugation
  • Functional thyroid hormone signaling
• When liver energy is low:
  • Estrogen clearance slows
  • Estrogen is reabsorbed through the gut (enterohepatic recirculation)
  • Circulating estrogenic activity increases despite “normal” labs
• Constipation, low-carb diets, fasting, and hypothyroidism all worsen estrogen retention.

Stress ups estrogen

• Stress upregulates aromatase, the enzyme that converts androgens into estrogen.
• Increased estrogen production in fat tissue, muscle, and peripheral tissues.

Solving Progesterone Imbalance

The second side of estrogen dominance is insufficient progesterone exposure. Estrogen dominance can exist even with normal or low estrogen if progesterone is inadequate.

Progesterone is not just a reproductive hormone

Progesterone:

• Opposes estrogen at the receptor level
• Stabilizes blood sugar
• Lowers cortisol and prolactin
• Supports thyroid hormone action
• Increases mitochondrial respiration
• Promotes tissue differentiation over proliferation

Without adequate progesterone, estrogen’s effects become unopposed, regardless of estrogen level.

Why progesterone is commonly low

Progesterone production is highly sensitive to:

• Stress hormones (especially cortisol)
• Low blood sugar
• Hypothyroidism
• Anovulatory cycles
• Aging

Healthy progesterone exposure requires:

• Stable blood sugar
• Adequate caloric and carbohydrate intake
• Functional thyroid signaling
• Reduction of chronic stress inputs
• Supporting low pregnenolone production
• In many cases, bioidentical progesterone support

Reasons why it is important to address low progesterone:

• Low progesterone levels can lead to mood swings, anxiety, and depression
• Low progesterone levels can cause irregular menstrual cycles.
• Progesterone is involved in maintaining healthy bones and low progesterone levels can increase the risk of osteoporosis
• Progesterone allows the thyroid glands to secrete its hormones
• During menopause, when estrogen levels decline, maintaining adequate progesterone becomes crucial
• Progesterone helps regulate metabolism and can influence weight management
• Progesterone has a calming effect on the central nervous system, which can positively impact sleep quality
• The brain has high concentrations of progesterone, and progesterone is protective to the brain
• Progesterone’s anti-estrogen effect has been successfully used to treat uterine and breast cancer
• For some women, hormonal fluctuations, including low progesterone levels, can trigger migraines
• Progesterone has cardiovascular benefits, including its role in promoting healthy blood clotting and regulating blood pressure
• Without sufficient progesterone, the uterine lining may become too thick, leading to a condition known as endometrial hyperplasia

On Taking Progesterone

• Does taking natural progesterone change your body’s ability to synthesize it?

There is no evidence to support the idea that your body’s own production of progesterone stops working after the administration of natural progesterone. Progesterone stimulates its own synthesis which means that taking doesn’t suppress the body’s ability to synthesize it.

• When should women take progesterone?

If a woman still has her menstrual cycle, she often cycles progesterone- two weeks on, two weeks off. However, if symptoms are serious, it’s common to continue taking progesterone even though patients can miss a period.

If a woman is in menopause, progesterone is often taken every single night or morning because it can have a protective effect.

We offer two options for progesterone supplements. The first option is our topical cream, which is available over-the-counter without the need for a doctor's prescription. The second option is our progesterone capsules, which are available after consultation with a doctor.

Thyroid function

Levels of thyroid hormone often decrease with age, especially in women. Thyroid regulates the conversion of cholesterol to progesterone. Therefore, a lack of thyroid hormones can result in low progesterone. Since estrogen can suppress thyroid hormone production, it’s key to address all angles contributing to thyroid dysfunction.

At the same time, estrogen itself can suppress thyroid hormone production and interfere with thyroid receptor sensitivity. So you can end up in a feedback loop:

Low thyroid → low progesterone
High estrogen → further thyroid suppression

This is why addressing thyroid health is foundational. You can’t optimize sex hormones without adequate metabolic support.

Raena’s Natural Desiccated Thyroid (NDT) is sourced from grass-fed bovine thyroid and freeze-dried to preserve its natural spectrum of thyroid hormones including T4, T3, T2, and calcitonin.

Other solutions in addition to progesterone and thyroid:

• Pregnenolone: Pregnenolone is the foundational precursor hormone from which progesterone, cortisol, and other steroid hormones are made. Chronic stress, aging, and metabolic slowdown can lower pregnenolone production, limiting the body’s ability to produce adequate progesterone. Supporting healthy pregnenolone levels can help restore downstream hormone balance and improve stress resilience.
• Magnesium: Magnesium supports progesterone signaling by lowering stress hormones, improving sleep quality, and reducing inflammatory signaling that amplifies estrogen’s effects. Magnesium deficiency is common and often worsens symptoms associated with estrogen dominance.
• B vitamins: B vitamins are required for cellular energy production, liver detoxification pathways, and steroid hormone synthesis. Inadequate B vitamin status can impair progesterone production and contribute to elevated stress hormones that promote estrogen dominance.
• Progesterone is rarely low for no reason. It declines with age, with chronic stress, with blood sugar instability, with thyroid slowdown, and with nutrient depletion. But what most women aren’t told is that you can restore progesterone. When you rebuild the foundation by supporting thyroid function, stabilizing metabolism, nourishing the body adequately, lowering stress signals, and when appropriate using bioidentical progesterone, the system can recalibrate. Hormones are responsive. With the right support and thoughtful intervention, health can improve, symptoms can ease, and life can feel steady again.

Remember: this post is for informational purposes only and may not be the best fit for you and your personal situation. It shall not be construed as medical advice. The information and education provided here is not intended or implied to supplement or replace professional medical treatment, advice, and/or diagnosis. Always check with your own physician or medical professional before trying or implementing any information read here.