Spearmint Tea Benefits: What Science Says About Hormones, PCOS, and Skin

Spearmint tea benefits are more targeted and clinically supported than most people realize. While it is often grouped with other mint teas as a simple digestive remedy, spearmint has a distinct and well-studied pharmacological profile — particularly its anti-androgenic activity, which makes it one of the most evidence-backed herbal teas for hormonal health in women. This guide covers what spearmint tea actually does, what the clinical trials show, who benefits most, and how to use it effectively.

What Makes Spearmint Different From Peppermint?

Spearmint (Mentha spicata) and peppermint (Mentha × piperita) are often confused, but they are botanically and pharmacologically distinct. The critical difference for health purposes is their active compound profiles:

• Peppermint is dominated by menthol — the compound responsible for the strong cooling sensation and digestive antispasmodic effects
• Spearmint contains minimal menthol and is instead rich in carvone and limonene — compounds with anti-inflammatory, antioxidant, and notably, anti-androgenic properties

This distinction matters because the hormonal benefits of spearmint tea — particularly its effect on testosterone — are specific to spearmint and do not apply to peppermint. Drinking peppermint tea will not produce the same hormonal effects.

Spearmint Tea Benefits: What the Research Shows

1. Anti-Androgenic Effect — Reduces Free Testosterone

This is spearmint tea’s most clinically significant and unique benefit — and the reason it has gained a dedicated following among women managing PCOS, hirsutism, and androgen-related acne.

Two randomized controlled trials have specifically tested spearmint tea’s effect on androgen levels in women:

Trial 1 (Grant, 2010 — Phytotherapy Research): 42 women with PCOS were assigned to drink 2 cups of spearmint tea per day or a placebo tea for 30 days. The spearmint group showed a significant reduction in free testosterone levels and a significant increase in LH (luteinizing hormone) and FSH (follicle-stimulating hormone). LH and FSH are the hormones that regulate ovarian function — their increase alongside reduced testosterone suggests a genuine hormonal rebalancing effect.

Trial 2 (Akdogan et al., 2007 — Phytotherapy Research): Women with hirsutism (excess facial and body hair driven by elevated androgens) who drank spearmint tea twice daily for 5 days showed significant reductions in free and total testosterone compared to peppermint tea controls.

What this means in practice: Regular spearmint tea consumption — 2 cups per day consistently — may meaningfully reduce the free testosterone levels that drive symptoms like unwanted facial hair, acne, irregular cycles, and hair thinning in women with hormonal imbalances or PCOS. This is not a dramatic pharmaceutical-level effect, but it is one of the most clinically supported herbal interventions for androgen management available.

2. PCOS Support

Polycystic ovary syndrome (PCOS) is partly driven by elevated androgens — the same hormonal imbalance that spearmint tea directly targets. The 2010 clinical trial above was specifically conducted in women with PCOS, and the hormonal improvements observed (reduced free testosterone, increased FSH and LH) are directly relevant to PCOS management.

Spearmint tea will not cure PCOS or replace medical treatment. But as a daily complementary practice — alongside appropriate medical care, nutrition, and lifestyle management — the anti-androgenic effect may contribute meaningfully to symptom management, particularly for hirsutism and acne.

Women interested in herbal teas for hormonal health more broadly should also explore our guide on hibiscus tea benefits for women, which covers a different and complementary set of hormonal benefits.

3. Anti-Acne and Skin Clarity

Androgen-driven acne — characterized by deep, cystic breakouts along the jawline, chin, and lower face — is directly linked to elevated testosterone and DHT activity in skin tissue. Because spearmint tea reduces free testosterone levels, it addresses one of the root drivers of this acne pattern.

Several online communities and small observational studies report improvements in hormonal acne with consistent spearmint tea consumption over 2–3 months. The clinical mechanism is plausible and consistent with the hormonal data from the trials above — this is not purely anecdotal.

4. Digestive Support and IBS Relief

Like peppermint, spearmint has antispasmodic properties — it relaxes smooth muscle in the digestive tract. This makes spearmint tea effective for:

• Bloating and gas
• Nausea and upset stomach
• Mild digestive cramping
• Post-meal digestive discomfort

The antispasmodic effect of spearmint is milder than peppermint due to its lower menthol content, which also means it is less likely to worsen acid reflux — peppermint is specifically contraindicated for GERD because menthol relaxes the lower esophageal sphincter. Spearmint is a safer digestive option for people with reflux sensitivity.

5. Anti-Inflammatory and Antioxidant Activity

Spearmint is rich in rosmarinic acid, flavonoids, and other polyphenols that demonstrate anti-inflammatory and antioxidant activity in laboratory studies. These compounds reduce the production of pro-inflammatory cytokines and neutralize free radicals.

Regular consumption of spearmint tea contributes to the systemic anti-inflammatory environment that protects against chronic disease — the same broad mechanism seen in hibiscus, green tea, and other polyphenol-rich beverages.

6. Memory and Cognitive Support

Spearmint extract has been studied for its effects on cognitive function, particularly in older adults. A randomized controlled trial found that spearmint extract supplementation improved working memory and spatial working memory in adults over 50 with age-associated memory impairment.

The active compound involved appears to be rosmarinic acid — which inhibits the breakdown of certain neurotransmitters. At tea concentration rather than extract concentration, this effect is likely milder but potentially cumulative with regular consumption.

7. Stress Reduction and Sleep Support

Spearmint contains flavonoids including luteolin and apigenin, which have mild sedative and anxiolytic properties. These compounds interact with GABA receptors in the brain — the same receptors targeted by anti-anxiety medications, though at far lower intensity.

A cup of warm spearmint tea in the evening may contribute to relaxation and easier sleep onset. It is one of the more pleasant caffeine-free options for an evening wind-down routine alongside chamomile. For a comprehensive guide to sleep-supporting drinks, see our article on the best drinks for better sleep.

How to Make Spearmint Tea

Hot brew (standard):

• Add 1–2 teaspoons of dried spearmint leaves (or 4–6 fresh leaves) per 240ml (8 oz) of hot water
• Steep for 5–7 minutes — longer steeping produces a stronger flavor and higher rosmarinic acid extraction
• Strain and serve plain or with a small amount of honey
• Do not use boiling water — steep at 85–90°C (185–195°F) to preserve delicate volatile compounds

Cold brew:

• Add 2 tablespoons of dried spearmint to 1 liter of cold water
• Refrigerate for 6–8 hours
• Strain and serve over ice
• Add a squeeze of lemon for brightness

Fresh mint tea:

• Muddle 8–10 fresh spearmint leaves gently (do not over-crush)
• Pour hot water over them directly in the cup
• Steep 5 minutes and strain
• Fresh spearmint tea has a brighter, more aromatic flavor than dried

For additional cold herbal tea recipes and combinations, our cold brew herbal tea recipes guide covers a wide range of options.

How Much Spearmint Tea Per Day for Hormonal Benefits?

The clinical trials showing hormonal effects used 2 cups per day consistently over 30 days. This is the evidence-based dose for the anti-androgenic effect.

Key points on dosing:

• 1 cup per day: provides digestive, antioxidant, and anti-inflammatory benefits but may be insufficient for measurable hormonal effects
• 2 cups per day: the protocol used in PCOS and hirsutism clinical trials — morning and evening
• 3+ cups per day: no evidence of additional benefit, and at very high amounts spearmint’s anti-androgenic effect could theoretically lower testosterone in men as well (see safety section below)

Hormonal benefits develop over 4–8 weeks of consistent daily consumption — similar to the timeline for hibiscus tea’s blood pressure effect. Short-term use will not produce measurable hormonal change.

Best Time to Drink Spearmint Tea

For hormonal benefits: morning and evening (matching the 2-cup clinical trial protocol). Taking it consistently at the same times each day maintains steadier plasma levels of the active compounds.

For digestive benefits: after meals, particularly after larger or heavier meals. The antispasmodic effect is most useful when the digestive tract is active.

For sleep and relaxation: 30–60 minutes before bed. The mild sedative flavonoids work gradually — a warm cup before bed is the optimal timing. See our best time to drink herbal tea guide for broader timing recommendations across herbal teas.

Spearmint Tea Side Effects and Safety

Spearmint tea is safe for most healthy adults at 1–2 cups per day. Key considerations:

Men and testosterone: Spearmint’s anti-androgenic effect is a benefit for women with elevated androgens but a potential concern for men who want to maintain normal testosterone levels. At 2 cups per day, the effect in healthy men is likely minimal — but men with already low testosterone or those in performance-focused contexts should be aware of this property.

Pregnancy: Spearmint has traditionally been used to stimulate menstruation, suggesting it may have mild uterine-stimulating properties. As a precaution, pregnant women should avoid large amounts of spearmint tea, though culinary use as a flavoring is generally considered safe.

Liver health: Very high doses of spearmint extract in animal studies have shown some liver enzyme changes. At normal tea consumption levels (1–3 cups/day), this is not a practical concern.

Drug interactions: No significant drug interactions are well-established for spearmint tea at normal consumption levels. People on hormonal medications (including hormonal contraceptives or hormone replacement therapy) should be aware of the additive anti-androgenic effect and discuss with their doctor.

For a reference on general herbal tea safety principles, see our guide on hibiscus tea side effects which covers the broader safety framework.

Spearmint Tea vs. Other Herbal Teas for Women

For a comprehensive guide to hibiscus tea benefits for women and how it complements spearmint’s hormonal profile, see our dedicated article. Our broader herbal teas guide covers the full landscape of caffeine-free wellness teas.

Frequently Asked Questions

Key Takeaways

• Spearmint tea benefits are most distinctive in the hormonal domain — two clinical trials confirm it reduces free testosterone and supports hormonal balance in women with PCOS and hirsutism
• The anti-androgenic effect requires 2 cups per day for at least 4–8 weeks to produce measurable results
• It is distinctly different from peppermint — the hormonal benefits are specific to spearmint and do not apply to peppermint tea
• Additional benefits include digestive relief, antioxidant and anti-inflammatory protection, mild cognitive support, and relaxation
• Safe for most healthy adults; men should be aware of the mild testosterone-lowering potential at higher doses
• One of the safest herbal teas for acid reflux sufferers — unlike hibiscus or peppermint
• Best combined with other women’s wellness teas like hibiscus for complementary hormonal and cardiovascular support