What foods are high in estrogen? What high estrogen in men really means

Many foods contain estrogen-like plant compounds, but typical servings rarely raise estrogen levels in men in a clinically meaningful way. The bigger drivers of high estrogen in men are often body fat, metabolic health, and environmental exposures, so the most effective fixes are usually not about “banning soy” or “quitting fruit.”

Key takeaways

• Foods highest in phytoestrogens include soy foods and lignan-rich seeds such as flax and sesame, but in clinical studies soy and isoflavone intake did not raise estrogen levels in men.^{[1] [2]}
• Estradiol is a normal, measurable hormone in men. The enzyme aromatase makes it from testosterone in the testes and other male tissues.^[3]
• Obesity and chronic illness lower testosterone in men independent of age, and aromatase, which converts testosterone to estradiol, works in fat tissue as well as the testes.^{[3] [4]}
• A 2021 meta-analysis of 41 clinical studies found that soy protein and isoflavone intake did not change total testosterone, free testosterone, estradiol, or estrone in men, regardless of dose or study duration.^[2]
• If symptoms persist, guidelines recommend confirming low testosterone with repeat morning testing, looking for the cause, and weighing fertility plans before any hormone treatment.^{[5] [6]}

The relationship between food estrogen and male hormones

In men, estrogen problems usually arise from hormone conversion inside the body rather than from “eating estrogen.”

According to a 2017 review in Physiological Reviews, estrogen acting through its receptors is needed for normal sperm maturation in men.^[3] Estrogen also acts on bone, brain, fat, muscle, and the cardiovascular system.^[3] Excess estrogen exposure has caused reproductive problems in men and male animals, and loss of estrogen signaling affects bone and other tissues.^[3]

Confusion about food arises because many plant foods contain phytoestrogens, plant compounds with a structure similar to the body’s own estradiol.^[1] In clinical studies of men, however, soy and isoflavone intake did not change estradiol or testosterone levels.^[2]

How estrogen and food compounds work in men

Estradiol and estrone are normal male hormones

Estrogen in men is mainly estradiol and estrone. Estradiol is the main active form, and estrone is a weaker form that can be converted to estradiol. Aromatase, the enzyme that converts testosterone into estradiol, is active in the testes and in other male tissues.^[3]

Laboratories use different assays and reference ranges for estradiol in men, so a result is best read alongside symptoms and the full hormone pattern.

Phytoestrogens in food: what foods are high in estrogen

Lists of “what foods are high in estrogen” are usually lists of foods that contain phytoestrogens. These plant compounds can bind to estrogen receptors, the proteins on cells that respond to estrogen. Two common types are lignans, found in many grains and seeds, and isoflavones, found in soy.^[1]

A 2019 review of phytoestrogens describes how the body handles them after a meal.^[1] They are processed in the gut, absorbed, and metabolized by the liver, and they are then excreted, largely in urine.^[1]

• Grains: Whole grains contain lignans.^[1] A Swedish population-based case-control study included about 2,600 men.^[7] In that study, high intake of foods rich in phytoestrogens was associated with lower prostate cancer risk, although measured lignan and isoflavone intake on its own showed no association.^[7]
• Soy products: Soy is the main dietary source of isoflavones.^[1] A 2021 meta-analysis in Reproductive Toxicology found no effect of soy protein or isoflavones on men’s testosterone or estrogen levels.^[2]
• Nuts and seeds: Flaxseed is a rich source of lignans.^[1] There is little human data on flaxseed and male hormone levels.
• Sesame: In a small 2013 uncontrolled study of 25 infertile men, three months of daily sesame was followed by higher sperm count and motility, which is sperm movement.^[8] Sperm shape did not change.^[8] The study did not report estrogen levels.
• Fruit and garlic: Some fruits, vegetables, and garlic contain phytoestrogens in much smaller amounts than soy or flaxseed.
• Dairy: A 2015 narrative review raised concern that steroid hormones in dairy foods could contribute to cancer risk.^[9] A 2018 review in the European Journal of Endocrinology concluded that the stronger evidence suggests estrogen amounts in cow’s milk are too low to cause health effects in humans.^[10]

Body fat and aromatase: a common driver of high estrogen in men

For many men, high estrogen is more about conversion than consumption. Visceral fat is fat stored around the organs in the midsection. Aromatase is active in fat tissue, so more body fat means more testosterone can be converted to estradiol.^{[3] [4]}

A 2015 review in Age and Ageing found that testosterone falls with age.^[4] It also found that obesity and chronic illness cause a large drop in testosterone independent of age.^[4] Lower testosterone is also common in men with insulin resistance and type 2 diabetes.

According to the Endocrine Society guideline, low testosterone is diagnosed only when persistent symptoms are present and low levels are confirmed on repeat morning testing.^[5] The AUA guideline uses a total testosterone level below 300 ng/dL as a reasonable cut-off for low testosterone.^[6]

Endocrine disruptors: the modern exposure problem

Some men also worry about exposures outside the kitchen. Endocrine disrupting chemicals are compounds that can interfere with hormone signaling. Sources discussed in the research include plastics, pesticides, other pollutants, and flame retardants.^[11]

A 2021 review in Frontiers in Endocrinology examined studies linking these chemicals to semen quality and to hypothalamic pituitary gonadal axis hormone levels, the brain to testicle hormone control system.^[11] The review found that animal studies support a role for these chemicals in male reproductive disorders, but evidence from human studies is mixed.^[11]

Conditions linked to estrogen imbalance in men

Estrogen imbalance in men has been linked to sexual, fertility, and other health problems. Many of these links come from observational or animal data and do not prove cause. Diet studies are also hard to interpret, because foods cluster with other lifestyle habits and hormone levels shift with weight, alcohol intake, sleep, medications, and illness.

• Sexual dysfunction and infertility: Estrogen signaling is needed for normal sperm maturation, and excess estrogen exposure has caused reproductive problems in men and male animals.^[3]
• Gynecomastia: Gynecomastia is the growth of breast tissue in men. It should be evaluated by a clinician, especially if it is painful or one sided. The AUA guideline recommends measuring estradiol in men with breast symptoms or gynecomastia.^[6]
• Male breast cancer risk: A pooled analysis of prospective cohort studies measured hormone levels before diagnosis.^[12] Men with higher estradiol levels had a higher risk of male breast cancer, which remains a rare disease.^[12]
• Blood clots: The Copenhagen City Heart Study followed 4,673 men for about two decades.^[13] In that study, higher natural estradiol and testosterone levels were not associated with venous thromboembolism, which includes deep vein thrombosis and pulmonary embolism.^[13]

Symptoms and signals of high estrogen in men

Symptoms tied to estrogen imbalance are not specific, so patterns matter more than any single complaint. This is especially true when symptoms cluster with weight gain or low testosterone symptoms.

• Erectile dysfunction: Erectile problems have many causes, including vascular disease, diabetes, medications, and low testosterone, so a hormone result is only one part of the assessment.
• Fertility problems: This may show up as low sperm count, reduced sperm motility, or difficulty conceiving with a partner.
• Gynecomastia or breast tenderness: New breast tissue growth or persistent tenderness deserves medical evaluation, which includes an estradiol measurement.^[6]
• Low libido and low energy: These are common symptoms of testosterone deficiency but are not specific. For that reason, guidelines require consistently low lab values before diagnosis.^{[4] [5]}
• Mood and cognitive changes: Estrogen acts in the brain.^{[3] [14]} However, irritability, low mood, and poor concentration have many causes and do not point to a specific hormone pattern.
• Increased abdominal fat: Obesity lowers testosterone.^[4] Aromatase in fat tissue also converts testosterone to estradiol.^[3]
• Bone or muscle changes: Loss of estrogen signaling affects bone and skeletal muscle in males, so estradiol that is too low is also a concern.^[3]

What to do about high estrogen in men

Start with measurement and likely causes rather than with lists of “high estrogen foods.”

1. Step 1: Get the right labs, not just one number: Ask for a core hormone panel drawn in the early morning. The Endocrine Society recommends measuring total testosterone with an accurate assay and confirming a low result with a repeat morning test.^[5] It also recommends measuring free testosterone by equilibrium dialysis when total testosterone is near the lower limit or SHBG may be abnormal.^[5] The AUA guideline calls for measuring LH in men with low testosterone, and estradiol in men with breast symptoms or gynecomastia.^[6] FSH is usually measured with LH. Depending on the clinical picture, a clinician may also order a CBC, a Comprehensive Metabolic Panel, PSA for men 40 and older, prolactin, TSH, A1c or fasting glucose, and lipids.
2. Step 2: Fix the highest leverage lifestyle factors first: Obesity lowers testosterone, and aromatase in fat converts testosterone to estradiol. Reducing body fat and improving metabolic health is therefore a reasonable first target.^{[3] [4]} Limit alcohol, include resistance training, and aim for a diet built around whole foods. Removing dairy is unlikely to change estrogen levels, since the estrogen in cow’s milk appears too low to affect human health.^[10] Soy foods do not need to be avoided, because clinical studies found no effect of soy or isoflavones on men’s testosterone or estradiol.^[2]
3. Step 3: Use targeted medical therapy when labs and symptoms support it: LH and FSH help determine whether hypogonadism is primary or secondary, which shapes treatment. Testosterone therapy can suppress sperm production. The Endocrine Society recommends against starting it in men planning fertility in the near term and calls for monitoring hematocrit during treatment.^{[5] [6]} Enclomiphene blocks estrogen receptors in the hypothalamus so that the pituitary releases more LH and FSH. For secondary hypogonadism, it is one option when preserving fertility matters. Published enclomiphene trials are small and short. Aromatase inhibitors are not for self-treatment, because estradiol that is too low can harm bone and other tissues in men.^[3]

Veedma offers testing that includes total and free testosterone measured by LC-MS/MS with LH and FSH, or a review of lab results you already have, with licensed providers interpreting the results. When appropriate, its licensed providers may prescribe enclomiphene or a tablet combining enclomiphene with tadalafil. Enclomiphene is not an FDA-approved drug; it is prescribed after a provider confirms the diagnosis and is compounded by a licensed U.S. pharmacy.

Myth vs fact

Myth: Soy is a “high estrogen food” that feminizes men.

Fact: A 2021 meta-analysis of 41 clinical studies found no significant effect of soy protein or isoflavone intake on testosterone, estradiol, or estrone in men.^[2]

Myth: If you have high estrogen in men, it is probably from fruit, garlic, or grains.

Fact: These foods contain much smaller amounts of phytoestrogens than soy. Even soy and isoflavone intake had no effect on men’s estradiol in clinical studies.^[2] A clinician will usually look first at body fat, medications, and alcohol use.

Myth: Flaxseed lowers testosterone because it is “high in estrogen.”

Fact: Flaxseed is rich in lignans, but there is little human data on flaxseed and male hormone levels. The available evidence does not show that it meaningfully raises estrogen or lowers testosterone in men.

Myth: High estrogen in men always means you should take an aromatase inhibitor.

Fact: Aromatase inhibitors are prescription drugs that need medical supervision and lab monitoring. Estradiol that is too low can harm bone and other tissues in men.^[3]

Myth: Cutting dairy automatically fixes estrogen imbalance.

Fact: An earlier narrative review raised concern about hormones in dairy.^[9] However, a 2018 review concluded that estrogen amounts in cow’s milk are likely too low to cause health effects in humans.^[10] Overall diet quality and body composition are better places to focus.

Bottom line

Soy, flax, and sesame are among the main food sources of phytoestrogens.^[1] Even so, clinical studies show soy and isoflavones do not change men’s testosterone or estradiol.^[2] If you have symptoms, get appropriate morning labs, including LH and FSH. Look for common drivers such as excess body fat, insulin resistance, medications, and alcohol use, which are more likely to shift the testosterone to estradiol balance than any single food.

References

1. Desmawati D, Sulastri D. Phytoestrogens and Their Health Effect. Open Access Maced J Med Sci. 2019;7:495-499. PMID: 30834024
2. Reed KE, Camargo J, Hamilton-Reeves J, et al. Neither soy nor isoflavone intake affects male reproductive hormones: An expanded and updated meta-analysis of clinical studies. Reprod Toxicol. 2021;100:60-67. PMID: 33383165
3. Cooke PS, Nanjappa MK, Ko C, et al. Estrogens in Male Physiology. Physiol Rev. 2017;97:995-1043. PMID: 28539434
4. Ahern T, Wu FC. New horizons in testosterone and the ageing male. Age Ageing. 2015;44:188-95. PMID: 25666224
5. Bhasin S, Brito JP, Cunningham GR, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018;103:1715-1744. PMID: 29562364
6. Mulhall JP, Trost LW, Brannigan RE, et al. Evaluation and Management of Testosterone Deficiency: AUA Guideline. J Urol. 2018;200:423-432. PMID: 29601923
7. Hedelin M, Klint A, Chang ET, et al. Dietary phytoestrogen, serum enterolactone and risk of prostate cancer: the cancer prostate Sweden study (Sweden). Cancer Causes Control. 2006;17:169-80. PMID: 16425095
8. Khani B, Bidgoli SR, Moattar F, et al. Effect of sesame on sperm quality of infertile men. J Res Med Sci. 2013;18:184-7. PMID: 23930112
9. Malekinejad H, Rezabakhsh A. Hormones in Dairy Foods and Their Impact on Public Health – A Narrative Review Article. Iran J Public Health. 2015;44:742-58. PMID: 26258087
10. Snoj T, Majdič G. MECHANISMS IN ENDOCRINOLOGY: Estrogens in consumer milk: is there a risk to human reproductive health?. Eur J Endocrinol. 2018;179:R275-R286. PMID: 30400018
11. Rodprasert W, Toppari J, Virtanen HE. Endocrine Disrupting Chemicals and Reproductive Health in Boys and Men. Front Endocrinol (Lausanne). 2021;12:706532. PMID: 34690925
12. Brinton LA, Key TJ, Kolonel LN, et al. Prediagnostic Sex Steroid Hormones in Relation to Male Breast Cancer Risk. J Clin Oncol. 2015;33:2041-50. PMID: 25964249
13. Holmegard HN, Nordestgaard BG, Schnohr P, et al. Endogenous sex hormones and risk of venous thromboembolism in women and men. J Thromb Haemost. 2014;12:297-305. PMID: 24329981
14. Zárate S, Stevnsner T, Gredilla R. Role of Estrogen and Other Sex Hormones in Brain Aging. Neuroprotection and DNA Repair. Front Aging Neurosci. 2017;9:430. PMID: 29311911