Say GOODBYE to Estrogen Dominance (Here’s How)

Dr. Stengler: In this video, I'm going to walk you through the three phases of estrogen detoxification, the key players in each step, and what you can do yourself nutritionally to create estrogen balance. You're going to learn how your liver and gut work together to process estrogens, the crucial nutrients involved, and why this process is so essential for your hormonal health. I'm Dr. Mark Stengler, and I've researched and written 20 books on nutrition and functional medicine, and I've been practicing for over 30 years as an integrative naturopathic medical doctor.

Let's talk about estrogen dominance. Maybe you've heard the term but don't know exactly what it means — likely your gynecologist or family doctor never talked to you about what estrogen dominance is. But if you're having the following signs and symptoms, you should be concerned. Estrogen dominance can accelerate aging and contribute to allergies, bloating, breast tenderness (especially around different parts of your cycle), depression, fatigue, and foggy thinking. It can predispose you to gallbladder disease and headaches, and contribute to scalp hair loss, blood sugar problems like hypoglycemia, increased blood clotting, insomnia, irregular menses, light or heavy bleeding, irritability around your cycle, low sex drive, memory loss, water retention, and weight gain, especially in the midsection — the waist, hips, and thighs.

What exactly is estrogen dominance? As the name tells you, estrogen is dominant — but dominant compared to what? The idea is that there's an excess of estrogen in relation to its balancing partner hormone, progesterone. The term estrogen dominance was created in 1996 by a very well-known, Harvard-trained gynecologist, Dr. John Lee, who wrote the book What Your Doctor May Not Tell You About Menopause. Estrogen dominance in women happens from one of three primary causes. First, estrogen levels are too high relative to progesterone — this might happen because of environmental estrogens such as synthetic hormones (a classic example is birth control pills), or xenoestrogens like pesticides and the ones you get from plastics. You can also get excess estrogen from fat tissue — if you're overweight, your fat cells make excess estrogen. Poor detoxification and elimination of estrogen are big causes. And third, your estrogen levels are too high while your progesterone levels are too low.

When you have estrogen dominance, you're more prone to autoimmunity. You can get breast tenderness, fibrocystic breast disease, and be more prone to cervical dysplasia (a precancerous condition of the cervix), endometrial thickening or endometrial cancer, endometriosis, infertility and miscarriages, osteoporosis, and polycystic ovarian syndrome. It contributes to PMS, can contribute to thyroid suppression like hypothyroidism, and contributes to uterine fibroids.

Let's talk about environmental chemicals, called endocrine-disrupting chemicals or EDCs, which mimic estrogen at the cell receptors — pesticides, fungicides, plastics, plasticizers, industrial solvents, heavy metals, and certain pharmaceuticals. The majority are man-made, but some occur naturally, and they get into the womb through the placenta to a growing baby. As of 2017, the Endocrine Disruption Exchange database noted there are almost 1,500 of these chemicals in the environment. At the cellular level, they interfere with the body's hormone production, the release of hormones, and estrogen transportation, metabolism, binding action, and elimination. It's key that we avoid these as best we can — but because we can't get away from them totally, we need to be able to detoxify them.

Before I go into estrogen detoxification, remember that estrogen is a vital hormone for women and men alike — and men can have estrogen dominance too, which is a topic for another video. When estrogen levels become too high, or when it's metabolized down harmful pathways, it contributes to the conditions I mentioned. The good news is that the body has a sophisticated system for breaking down and eliminating excess or problematic estrogens. This process primarily happens in your liver and is completed with the help of your gut. We can think of it as a three-phase cleanup operation.

Phase one is the first breakdown. The liver takes estrogens and begins to break them down into smaller intermediate metabolites — like taking a large piece of furniture and breaking it into smaller parts. This is carried out by a family of enzymes known as cytochrome P450 enzymes, which add a hydroxyl group to the estrogen molecule, making it more reactive. However, some of these intermediate metabolites can be more toxic than the original estrogen if they're not quickly processed in phases two and three. Key nutrients in phase one include vitamins B2, B3, B6, B9 (folate), and B12, which are essential cofactors for the enzymes involved. We also need antioxidants to protect against reactive byproducts — vitamin C and E are very important, as is the antioxidant mineral selenium, and magnesium is a vital cofactor for many of the enzymatic reactions.

In phase two, the liver makes estrogen more water-soluble, helping the intermediate metabolites be excreted. These are conjugation pathways where your body attaches a water-soluble molecule to the estrogen metabolite — like putting all those furniture pieces into clearly labeled, sealed boxes ready for transport. This phase ensures estrogens become less toxic and can be easily flushed out. Key nutrients and foods for phase two include cruciferous vegetables — broccoli, cauliflower, kale, Brussels sprouts — which contain powerful compounds like indole-3-carbinol and its metabolite diindolylmethane (DIM) that promote healthy estrogen metabolism. Sulfur compounds, involved in sulfation, are found in garlic, onions, and cruciferous vegetables. You also need amino acids like glycine, taurine, and methionine for the conjugation pathways, and glucuronic acid, a major component for estrogen elimination, found in a diet rich in plant foods.

In phase three, we have the final elimination. After being conjugated in phase two, these water-soluble estrogen metabolites are secreted in your bile and urine to be excreted. For efficient elimination, a healthy digestive system is critical, because processed estrogens are primarily eliminated through your stool. You need fiber, both soluble and insoluble, from foods like flax seeds, chia seeds, fruits, vegetables, and whole grains, because fiber binds the excess estrogen in your digestive tract and prevents it from being reabsorbed. Otherwise, it gets reabsorbed in the large intestine back into the bloodstream. Your gut microbiome is very important here: your gut bacteria produce an enzyme called beta-glucuronidase, and if you have an imbalance in your gut flora, this enzyme can become overactive, breaking the bond on those conjugated estrogens and releasing them back into your body to be reabsorbed — undermining all the work your liver did. Eating fermented foods like yogurt, kefir, and kimchi, or taking a probiotic supplement, can help maintain a healthy gut balance and keep beta-glucuronidase levels in check.

Understanding these three phases shows how interconnected your diet, liver health, and gut health are to maintaining optimal estrogen balance. By supporting these pathways with the right foods and nutrients, you can significantly improve your hormonal health and help prevent or alleviate estrogen dominance. Another factor goes back to digestion and detoxification: bile production and flow. We use herbs that increase bile production and flow. Choleretic herbs stimulate the liver to produce more bile, which is essential for digesting fats and eliminating waste products like estrogen metabolites. A good example is artichoke leaf, one of the most well-researched choleretics; its active compound, cynarin, significantly increases bile output. Turmeric is also very effective — anti-inflammatory and choleretic. Dandelion root, traditionally used as a liver tonic, gently stimulates bile production and has been used in European and naturopathic medicine for estrogen dominance.

We also have herbs that stimulate bile flow, known as cholagogue herbs, which stimulate the gallbladder to contract and release stored bile into the small intestine. Many bitter herbs have this effect; milk thistle is one of the more well-studied — not only liver-protective thanks to its compound silymarin, but also acting as a cholagogue to help release bile and get rid of estrogen metabolites.

Another simple factor in improving estrogen dominance is plain old exercise — a powerful tool through several interconnected mechanisms. Number one, it reduces estrogen-producing body fat. Fat tissue isn't just inert storage; it actively produces estrogen via an enzyme called aromatase, which converts androgens into estrogen. The more body fat, the more aromatase activity, leading to higher overall estrogen levels — a primary driver of estrogen dominance, especially in overweight women. Cardiovascular and strength training reduce body fat, which helps decrease this excess estrogen production. Exercise also enhances liver detoxification — the liver is the primary organ for breaking down estrogens, and regular activity increases blood flow throughout the body, including the liver, improving its function. Exercise improves insulin sensitivity too: insulin resistance and high blood sugar are closely linked to hormone imbalances, and high insulin levels lead to increased fat storage and lower sex hormone-binding globulin, the protein that binds estrogen in your bloodstream. Resistance training and high-intensity interval training make cells more sensitive to insulin, lowering blood sugar and insulin and raising sex hormone-binding globulin, which supports a healthier estrogen-to-progesterone ratio.

Exercise also promotes regular bowel elimination, so you don't have constipation, which leads to estrogens being reabsorbed from the gut. Moderate aerobic exercise like brisk walking or jogging stimulates peristalsis — the muscular contractions of your intestines — promoting regular bowel movements so harmful estrogen metabolites are efficiently moved out of the body. As for sex hormone-binding globulin, when estrogen is bound to it, the estrogen becomes inactive; low levels mean more free, active estrogen available to exert effects on your tissues, contributing to estrogen dominance. Exercise has been shown to consistently increase your levels of sex hormone-binding globulin, effectively managing your estrogen supply. By addressing these key areas with a regular exercise routine, you'll have much better balanced hormones.

Now, some women have good body weight and good detoxification, but for other reasons their progesterone levels are too low, leading to estrogen dominance. You can naturally boost progesterone with vitex in premenopausal women, and we can always use bioidentical progesterone as a hormone if need be for really severe cases, which does work well. I hope you found this information helpful. If you did, hit the like button and subscribe for more evidence-based health information. Thanks for watching.

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