Does Licorice Root Increase Estrogen?

Licorice root does NOT directly raise your body’s raw blood estrogen levels, but it acts as a mild phytoestrogen to produce estrogen-like hormonal effects. As a herbal pharmacist, this is one of the most misunderstood hormone questions about licorice. Many clients fear licorice spikes estrogen and causes hormonal imbalances, while others take it expecting to fix low estrogen entirely. The truth is nuanced: licorice is a mixed selective estrogen receptor modulator (SERM), meaning it mimics and balances estrogen activity rather than artificially boosting hormone concentrations.

Recent clinical data and FDA-reviewed studies confirm licorice’s flavonoids bind to human estrogen receptors to regulate hormonal function, without causing abnormal estrogen elevation in healthy users. It balances low estrogen symptoms and modulates excess estrogen activity, making it a hormone harmonizer instead of a hormone booster.

Disclaimer: This article is for educational wellness reference only, not medical hormone therapy. Individuals with estrogen-sensitive cancers, fibroids, endometriosis, or hormone-related conditions must consult a doctor before using licorice long-term.

Scientific Breakdown: How Licorice Affects Estrogen

Licorice root contains key phytoestrogen compounds including liquiritigenin, isoliquiritigenin, and glabridin. These plant-based flavonoids create hormonal effects through two targeted mechanisms:

• Estrogen receptor binding (mild estrogenic effect): When the body has low estrogen (menopause, post-cycle, chronic stress), licorice compounds bind to estrogen receptors, activating mild estrogen-like functions to relieve hot flashes, mood swings, and vaginal dryness. This eases low-estrogen symptoms without raising actual serum estrogen levels.
• Anti-estrogen balancing effect: When the body has excess estrogen (estrogen dominance, PMS, bloating), licorice competitively blocks excessive estrogen receptor activation, lowering overactive estrogen responses and balancing progesterone–estrogen ratios.

This dual-action SERM behavior explains why clinical trials show no significant increase in blood estrogen levels after regular licorice use, despite clear hormonal symptom improvements.

Key Difference: Mimicking vs. Increasing Estrogen

Most users confuse these two completely separate hormonal actions:

Increasing estrogen = Raising measurable hormone values in the bloodstream (can cause hormonal overload).

Mimicking estrogen = Plant compounds activate weak estrogen receptors to fill hormonal gaps (balancing, non-spiking effect).

Licorice only performs the second action. It never causes dangerous estrogen spikes or hormonal surges in healthy cycling adults.

Real Client Case: Licorice Balanced Low Estrogen & PMS Imbalance

This is a typical hormone-balancing case I resolve in daily herbal consultations:

A 38-year-old female client suffered from stress-induced hormonal imbalance, including mild menopausal-like hot flashes, irregular cycle mood swings, and estrogen dominance bloating. Her blood work confirmed normal baseline estrogen levels but poor hormonal receptor sensitivity.

She avoided licorice for years believing it would “increase estrogen and worsen fibroids”. After reviewing her hormone profile, I prescribed cycled regular licorice root (5 weeks on / 1 week off). Within one month, her hot flashes disappeared, PMS irritability reduced drastically, and monthly bloating resolved. Her follow-up hormone blood tests showed zero elevated estrogen markers—only improved hormonal balance.

This case proves licorice modulates and balances estrogen function, rather than artificially raising hormone levels.

Licorice’s Secondary Hormone Mechanism: Testosterone Conversion

A secondary minor pathway contributes to licorice’s hormonal effects: licorice supports mild natural conversion of testosterone to estrogen in deficient individuals. This is a subtle, body-regulated physiological adjustment, not an artificial hormone spike. It only occurs when the body needs more estrogen, preventing hormonal deficiency symptoms.

DGL vs. Regular Licorice for Hormone Balance

Only regular full-spectrum licorice offers estrogen-modulating benefits.

DGL licorice removes most hormone-active flavonoids and glycyrrhizin. It delivers zero estrogen-mimicking or hormone-balancing effects and cannot improve PMS, menopausal symptoms, or hormonal imbalance. For hormonal support, always use properly cycled regular licorice root.

Who Should Be Cautious With Licorice’s Phytoestrogen Effects

Though licorice does not spike estrogen, its mild receptor-binding action requires caution for hormone-sensitive groups:

• Estrogen-positive breast cancer history
• Severe endometriosis or large uterine fibroids
• Hormone-dependent ovarian conditions
• Individuals on prescription hormone replacement therapy (HRT)

These groups should avoid long-term regular licorice use or consult an endocrinologist first.

FAQs (Licorice Root & Estrogen)

Q: Does licorice root raise serum estrogen levels in blood tests?

A: No. Multiple clinical studies confirm licorice does not significantly increase measurable blood estrogen levels; it only modulates estrogen receptor activity.

Q: Can licorice help low estrogen symptoms?

A: Yes. Its mild phytoestrogen action effectively eases hot flashes, mood swings, and low-estrogen fatigue without hormone overstimulation.

Q: Does licorice worsen estrogen dominance?

A: No. As a SERM, it blocks excess estrogen receptor activity and improves estrogen-progesterone balance, reducing dominance symptoms like bloating and breast tenderness.

Q: Is DGL licorice phytoestrogenic?

A: No. DGL processing removes most hormone-active compounds, so it has no estrogenic effects.

Q: Can licorice regulate irregular menstrual cycles from hormonal imbalance?

A: Yes, for mild stress-related hormonal irregularities, thanks to its combined cortisol-balancing and estrogen-modulating effects.

Final Pharmacist Verdict

Licorice root does NOT increase raw estrogen levels in the body. It acts as a gentle, smart hormonal modulator with SERM-like dual action: filling low estrogen gaps to relieve deficiency symptoms and balancing excess estrogen activity to reduce dominance issues. This makes regular cycled licorice a powerful tool for PMS relief, menopausal support, and stress-induced hormonal imbalance—without the risk of abnormal estrogen spikes. Avoid DGL for hormone support and exercise caution with hormone-sensitive medical conditions.