Estrogens are key hormones in the body, especially in women. They are produced primarily in the ovaries , although also to a lesser extent in the adrenal glands , adipose tissue , and other tissues such as the liver and brain . Their function goes far beyond enabling pregnancy: they participate in the menstrual cycle , promote cardiovascular health , contribute to maintaining adequate bone density , and influence mood and cognitive function.
These hormones allow women to become pregnant because they play a role in egg maturation , ovulation , and preparing the endometrium for implantation. They also help protect the cerebrovascular system , contribute to fat and cholesterol metabolism , and promote more regular menstruation . Without estrogen, reproduction would be impossible, and overall health would be severely compromised.
Precisely because it is an essential hormone , maintaining a balance in its levels is fundamental. Just as with other hormones, an excess or a deficiency can cause significant imbalances . When estrogen levels are too high, the risk of weight gain increases because the body is unable to metabolize it efficiently. It also contributes to thyroid disorders , weakens bones (increasing the risk of osteoporosis ), and raises the likelihood of developing estrogen-dependent diseases , such as certain types of breast or endometrial cancer.
What does it mean to have excess estrogen and how does it occur?
We speak of excess estrogen (sometimes called hyperestrogenism) when there is more estrogen than the body needs or when its action is not balanced by other hormones, such as progesterone . Some of this estrogen is generated by an enzyme called aromatase , which transforms male hormones (androgens) into estrogens, for example:
- Testosterone en estradiol.
- Androstenedione en estrone.
Aromatase is found in the breasts , ovaries , liver , adrenal glands , brain , bones , skin , and, notably, in fat cells . Therefore, excess adipose tissue is associated with higher levels of circulating estrogen. Some estrogen-dependent tumors (such as fibroids, endometriosis, and certain breast cancers) exhibit increased aromatase activity , reinforcing the importance of regulating its function through diet and lifestyle.
When the goal is to lower estrogen levels , diet becomes a crucial tool. The aim is not to eliminate estrogen, but to balance its effects , improve its liver metabolism , and promote its elimination through the intestines , thereby reducing the overall load of active estrogen in the body.
The role of fiber, the liver, and the intestine in estrogen elimination
Dietary fiber is one of the most effective allies for naturally reducing estrogen levels. Circulating estrogens are metabolized in the liver and then pass into the intestines to be eliminated. When the diet is low in fiber and intestinal transit is slow, some of these estrogens can be reabsorbed and returned to the bloodstream, maintaining higher than desirable levels.
Incorporating fiber-rich foods (fruits, vegetables, legumes, seeds, and whole grains ) improves intestinal transit and facilitates the faster elimination of metabolized hormones through feces. Furthermore, fiber binds to some estrogens in the intestine, reducing their reabsorption.
Another key element is the gut microbiota , particularly a group of bacteria known as the estrobolome . These bacteria play a role in the enterohepatic circulation of estrogens, meaning the amount of estrogen that re-enters the bloodstream after passing through the intestine. A diverse and balanced microbiota, fostered by a diet rich in fiber and plant-based foods , helps to modulate estrogen levels and reduce symptoms associated with excess estrogen, such as bloating , water retention , and mood swings.
In addition, certain plant-based foods have a detoxifying effect on the liver , supporting the estrogen metabolism process . Slightly bitter vegetables, such as arugula or dandelion , as well as garlic or turmeric , can help optimize this process.
Whole grains, oats and satiety against excess estrogen
Whole grains , such as oats , play a dual role in the natural regulation of estrogen. On the one hand, their high fiber content helps improve intestinal transit and eliminate metabolized estrogens . On the other hand, their specific components help these grains block some harmful estrogens , modulating their effects in the body.
In addition, whole grains create a strong feeling of satiety . By keeping the stomach satisfied for longer, they reduce the urge to snack between meals and promote weight management . This is especially important because fat cells produce estrogen through the aromatase enzyme; therefore, reducing excess body fat is part of the strategy to balance estrogen levels.
A diet rich in whole grains , legumes, fruits, and vegetables, as opposed to a "Western" diet (high in processed meats , refined sugars , and ultra-processed foods ), is associated with more stable estrogen levels and a lower risk of obesity and breast cancer . Incorporating oats into breakfasts, salads, or savory dishes is a simple way to support this hormonal balance.
Broccoli, cruciferous vegetables, and vitamins that modulate estrogen
Broccoli is a diuretic food that helps prevent the accumulation of toxins and promotes the body's natural detoxification. This diuretic action facilitates the elimination of waste products and indirectly contributes to maintaining a more favorable environment for hormonal balance. But its value in regulating estrogen goes far beyond this effect: it belongs to the cruciferous vegetable family (along with cauliflower, Brussels sprouts, and cabbage), which contains compounds such as indole-3-carbinol (I3C) and DIM (diindolylmethane).
These compounds act on estrogen metabolism in the liver , promoting the formation of more protective metabolites and reducing the proportion of those that could be more harmful in the long term. Thus, a diet rich in cruciferous vegetables contributes to a safer estrogen metabolite profile for women's health.
Broccoli also provides vitamin B1 and vitamin E , nutrients that support testosterone production and the generation of internal antioxidants . These vitamins can help modify hormonal balance, promoting an environment less dominated by excess estrogen and reducing symptoms associated with estrogen dominance (bloating, breast tenderness, intense mood swings).
In addition to cruciferous vegetables, other foods with interesting bioactive compounds include garlic (linked to better estrogen elimination and beneficial effects on endometriosis in animal models), turmeric (which supports liver function ), and green tea or berries , which are very rich in antioxidants that reduce inflammation.
Red fruits, beta-carotene and modulating phytoestrogens
Red fruits ( strawberries, raspberries, blueberries, cherries, currants, goji berries, etc.) are especially rich in beta-carotene and other carotenoids . Beta-carotene helps the body produce vitamin A , a nutrient involved in tissue health , immunity , and proper cell differentiation.
The carotenoid compounds present in these fruits help reduce the growth of breast cells that can be estrogen receptors and have a tendency to form tumors . For this reason, incorporating foods rich in beta-carotene and antioxidants into the daily diet is associated with a lower risk of breast cancer and other estrogen-dependent conditions.
In addition, many red fruits and berries contain lignan -type phytoestrogens , which act as modulators of estrogenic activity. Phytoestrogens are plant-derived compounds with a structure similar to that of human estrogens. Their distinguishing characteristic is their ability to adapt to the body's hormonal situation.
- In case of estrogen deficiency, contribute a mild estrogenic action.
- In case of excessThey compete for the receivers and can block part of its effectreducing the overall hormonal load.
Other foods rich in lignans include flax and sesame seeds , fruits , and whole grains . When these lignans reach the gut, the gut microbiota transforms them into substances with mild estrogenic activity, helping to balance the body's hormonal response.
Other nutrients and habits that support hormonal balance
Along with choosing specific foods, there are nutrients and lifestyle habits that help maintain estrogen levels within a healthy range. Among the most important are:
- B vitamins (especially B6): participate in the regulation of hormone production and in estrogen metabolism. Foods such as banana, oats, avocado o corn they are good sources.
- Vitamin C: : increases the beneficial effect of estrogens and maintains the proper functioning of immune systemIt is found in citrus fruits, Kiwi, broccoli, peppers o parsley.
- Zinc: essential mineral in the hormone synthesis and regulation. It is present in seeds, nuts, vegetables o mushrooms.
- Omega-3 fatty acids: present in blue fish, seafood, olive oil, avocado y nutsThey have an effect anti-inflammatory and contribute to a more balanced hormonal environment.
- Quality proteins: essential for manufacture hormones and to maintain the Muscle masswhich helps regulate sensitivity to insulin and energy balance.
In addition to diet, it's important to manage chronic stress , improve sleep quality , engage in moderate exercise , and limit exposure to xenoestrogens (chemicals with estrogenic effects found in some plastics, pesticides, and cosmetics). All of these factors work together with diet to maintain a more stable hormonal profile and reduce the impact of excess estrogen on health.
Adopting a diet rich in fiber , whole grains , cruciferous vegetables , red fruits , healthy fats , and modulating phytoestrogens , along with good sleep habits, stress management, and physical activity, is one of the most effective and sustainable ways to naturally reduce estrogen levels and protect long-term hormonal health.