Last checked September 2026 against 18 sources · Editorial policy
Foods high in estrogen (phytoestrogens)
Foods don't contain human estrogen; they contain phytoestrogens, plant compounds similar in structure to estrogen. The richest sources are soy foods such as tofu, tempeh, edamame, miso and soy milk, which are highest in isoflavones, and flaxseed and sesame, which are highest in lignans. In a Canadian analysis of 121 foods, nuts and oilseeds had the most total phytoestrogens, then soy products, cereals and breads, and legumes. Eating them doesn't meaningfully raise estradiol after menopause.
Soy, flaxseed and sesame are the richest sources of phytoestrogens, plant compounds similar in structure to estrogen. Which foods have the most, and what they can and can't do.
Foods high in estrogen: expectation vs reality
What people often expect
“Eating high-estrogen foods will raise my estrogen and fix my menopause symptoms”
What the evidence shows
In 40 trials of postmenopausal women taking a median 75 mg of soy isoflavones a day, there was no significant effect on estradiol, FSH, the uterine lining or vaginal cells. Isoflavone supplements do modestly reduce hot flashes, by 20.6% in frequency in one meta-analysis, but phytoestrogens behave differently from the hormone estrogen and don't replace HRT.
Phytoestrogen foods: what they are and what they do
What are phytoestrogens?
Phytoestrogens are plant compounds that resemble estrogen in structure. The main groups are isoflavones, such as genistein and daidzein, found mostly in soy; lignans, such as secoisolariciresinol, found in seeds, grains and vegetables; and coumestans, such as coumestrol. Gut bacteria turn plant lignans into enterolignans. Researchers think soy isoflavones act more like selective estrogen receptor modulators than like estrogen itself.
Foods highest in phytoestrogens
In a Canadian analysis of 121 foods, total phytoestrogens per 100 g were highest in nuts and oilseeds, followed by soy products, cereals and breads, legumes, processed foods containing soy, vegetables, fruits and beverages. Soy products had by far the most isoflavones, while nuts and oilseeds, cereals and breads, and legumes led for lignans. That makes soy and seeds the two main food sources.
Soy foods: the main source of isoflavones
Common soy foods include tofu, miso, tempeh, edamame and soy milk, and soy supplements may contain soy protein or concentrated isoflavones. Soy products contain the highest amounts of isoflavones of any food group. NCCIH says soy may help reduce hot flash frequency and severity, but the effect may be small and results haven't been completely consistent.
Learn more →Flaxseed and sesame: the main lignan sources
In a Dutch food database, flaxseed was the richest source of lignans at 301,129 micrograms per 100 g, mainly secoisolariciresinol, and sesame seeds were next at 29,331. Grain products ranged from 7 to 764 micrograms per 100 g, and brassica vegetables had 185 to 2,321. Only four of 109 foods had no measurable lignans at all.
Learn more →Do phytoestrogen foods raise estrogen levels?
Not much. In a meta-analysis of forty-seven studies, soy or isoflavones didn't significantly change estradiol, estrone, FSH or LH in postmenopausal women; there was a small, non-significant rise in estradiol of about 14%. In premenopausal women, soy lowered FSH and LH by about 20% and lengthened cycles by about a day. A newer review of 40 trials found no estrogen-like effects.
Do estrogen foods help menopause symptoms?
Modestly at best. A JAMA meta-analysis of 62 studies found phytoestrogens reduced daily hot flashes by 1.31 and slightly improved vaginal dryness, but not night sweats, and 74% of trials had a high risk of bias. A Cochrane review found no conclusive evidence overall, though extracts with over 30 mg a day of genistein consistently reduced hot flashes, and noted a strong placebo effect.
Learn more →Are phytoestrogen foods safe?
As foods, generally yes. Among 5,033 breast cancer survivors in China, those eating the most soy had lower death and recurrence rates (hazard ratio 0.71 for death). NCCIH notes soy allergy, bloating or constipation, and that soy foods high in tyramine, such as tofu and soy sauce, can interact dangerously with MAOI antidepressants. Don't eat raw or unripe flaxseeds.
Phytoestrogens vs estrogen therapy
Phytoestrogens aren't a substitute for estrogen HRT. In postmenopausal trials, soy isoflavones didn't thicken the uterine lining or change vaginal cells, markers that estrogen does change. That's reassuring for safety, but it also means they won't treat vaginal dryness or prevent bone loss the way estrogen does. HRT is the most effective treatment for hot flashes.
Learn more →Phytoestrogen foods by the numbers
From the studies on this page
fewer hot flashes with soy isoflavone supplements vs placebo in a meta-analysis
20.6%
301,129 µg
29,331 µg
40 trials
Phytoestrogen content varies by variety, processing and database method, and one author of the 40-trial review works for a soy nutrition institute.
Using phytoestrogen foods in menopause
Soy foods as everyday protein
Some evidenceSwapping other proteins for soy may lower cholesterol slightly, and soy may modestly reduce hot flashes. Tofu, tempeh, edamame and soy milk are easy options.
Related guide →Soy isoflavone supplements
Some evidenceReduced hot flash frequency by 20.6% and severity by 26.2% vs placebo in a meta-analysis; supplements with more genistein worked better.
Related guide →Ground flaxseed
Limited evidenceThe richest lignan source, but a large trial found flaxseed bars didn't reduce hot flashes more than placebo.
Related guide →Red clover
No good evidenceIn pooled trials, the red clover extract Promensil didn't reduce hot flashes more than placebo.
HRT for real estrogen replacement
First stepIf hot flashes or dryness affect your life, estrogen therapy works far better than any food.
Related guide →
When to talk to a doctor about estrogen foods and supplements
Hot flashes or night sweats affecting daily life
Ask about HRT or non-hormonal medicines rather than relying on diet.
You take an MAOI antidepressant
Check with your doctor before eating a lot of tofu or soy sauce, which are high in tyramine.
You've had breast cancer and want to use isoflavone supplements
Talk to your oncology team; soy foods are one thing, concentrated supplements another.
You're pregnant or breastfeeding
Keep soy to food amounts; higher amounts may be unsafe in pregnancy.
Estrogen foods: questions women ask
What foods are high in estrogen (oestrogen)?
No food contains human estrogen, but some are high in phytoestrogens: soy foods such as tofu, tempeh, edamame, miso and soy milk, and seeds such as flaxseed and sesame. Legumes, whole grains and brassica vegetables contain smaller amounts.
What foods contain phytoestrogens?
Nearly all plant foods contain some. In a Canadian analysis, nuts and oilseeds had the most total phytoestrogens, followed by soy products, cereals and breads, and legumes. Soy leads for isoflavones; flaxseed and sesame lead for lignans.
Do edamame beans have estrogen?
They don't contain estrogen, but as young soybeans they contain isoflavones, the phytoestrogens soy is known for. Eating edamame is a normal part of a healthy diet and hasn't been shown to raise estrogen levels in postmenopausal women.
What foods boost estrogen, and are there estrogen food boosters?
No food reliably boosts estrogen. Soy and flax provide phytoestrogens, but trials in postmenopausal women found no significant change in estradiol. If low estrogen causes symptoms, HRT is the effective way to replace it.
Related →Are there natural sources of estrogen?
Plant foods provide phytoestrogens, which resemble estrogen but act differently. Your own body is the main natural source: after menopause it still makes estrone in body fat and the adrenal glands.
Do chia seeds have estrogen?
Chia seeds don't contain estrogen and weren't among the foods measured in the phytoestrogen databases we checked. Among measured seeds, flaxseed and sesame were by far the richest in lignans.
Related →Are estrogen-rich foods bad for women?
Generally not. Soy foods were linked to lower death and recurrence rates in breast cancer survivors, and soy isoflavones didn't thicken the uterine lining in trials. Soy allergy and MAOI interactions are the main cautions.
Can food replace HRT?
No. Phytoestrogens modestly reduce hot flashes at best and don't act like estrogen on the uterus, vagina or hormone levels. HRT remains the most effective treatment for menopause symptoms.
Related →Do menopause experts recommend diet changes for hot flashes?
Not as a treatment. The North American Menopause Society's 2023 statement doesn't recommend dietary modification, soy foods or soy extracts for hot flashes, and recommends CBT, clinical hypnosis, SSRIs, SNRIs, gabapentin and fezolinetant instead.
Related →Are there estrogen-increasing foods?
Not in a measurable way after menopause. In a meta-analysis of forty-seven studies, soy and isoflavones didn't significantly raise estradiol in postmenopausal women, and a newer review of 40 trials found no estrogen-like effects on hormones, the uterus or vaginal tissue.
Sources
- National Center for Complementary and Integrative Health. Soy: usefulness and safety.
- Thompson LU, Boucher BA, Liu Z, et al. Phytoestrogen content of foods consumed in Canada, including isoflavones, lignans, and coumestan. Nutr Cancer. 2006;54(2):184-201.
- Milder IE, Arts IC, van de Putte B, et al. Lignan contents of Dutch plant foods: a database including lariciresinol, pinoresinol, secoisolariciresinol and matairesinol. Br J Nutr. 2005;93(3):393-402.
- Viscardi G, Back S, Ahmed A, et al. Effect of Soy Isoflavones on Measures of Estrogenicity: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Adv Nutr. 2025;16(1):100327.
- Taku K, Melby MK, Kronenberg F, et al. Extracted or synthesized soybean isoflavones reduce menopausal hot flash frequency and severity: systematic review and meta-analysis of randomized controlled trials. Menopause. 2012;19(7):776-90.
- Hooper L, Ryder JJ, Kurzer MS, et al. Effects of soy protein and isoflavones on circulating hormone concentrations in pre- and post-menopausal women: a systematic review and meta-analysis. Hum Reprod Update. 2009;15(4):423-40.
- Franco OH, Chowdhury R, Troup J, et al. Use of Plant-Based Therapies and Menopausal Symptoms: A Systematic Review and Meta-analysis. JAMA. 2016;315(23):2554-63.
- Lethaby A, Marjoribanks J, Kronenberg F, et al. Phytoestrogens for menopausal vasomotor symptoms. Cochrane Database Syst Rev. 2013;2013(12):CD001395.
- Shu XO, Zheng Y, Cai H, et al. Soy food intake and breast cancer survival. JAMA. 2009;302(22):2437-43.
- National Center for Complementary and Integrative Health. Flaxseed and flaxseed oil: usefulness and safety.
- NICE. Menopause: identification and management (NG23). Updated 2024.
- NHS. Types of hormone replacement therapy (HRT).
- Pruthi S, Qin R, Terstreip SA, et al. A phase III, randomized, placebo-controlled, double-blind trial of flaxseed for the treatment of hot flashes: North Central Cancer Treatment Group N08C7. Menopause. 2012;19(1):48-53.
- National Center for Complementary and Integrative Health. Red clover: usefulness and safety.
- Crandall CJ, Mehta JM, Manson JE. Management of Menopausal Symptoms: A Review. JAMA. 2023;329(5):405-420.
- Cleveland Clinic. Low estrogen: causes, symptoms, diagnosis and treatment.
- Cleveland Clinic. Estrone: function, hormone levels and testing.
- The North American Menopause Society. The 2023 nonhormone therapy position statement of The North American Menopause Society. Menopause. 2023;30(6):573-590.
See our editorial policy.
Related guides
Does soy contain estrogen?
Soy contains isoflavones, plant compounds similar in structure to estrogen. What studies show for estrogen lev…
Flax seeds and estrogen
Flaxseed is the richest food source of lignans, a type of phytoestrogen. What studies show for hot flashes and…
Estrogen supplements
No supplement contains estrogen. Soy isoflavones, red clover and black cohosh have mixed evidence for hot flas…
How to increase estrogen naturally
Food and supplements can't replace falling estrogen. When low weight, overtraining or stress are the cause, li…