PCOS · 4 min read · 2026-05-16
Spearmint for PCOS: How a Simple Herb Lowers Testosterone
Spearmint is one of those supplements that sounds almost too simple to be real. It's the same mint in your gum and tea — but research shows it can meaningfully lower the androgens (like testosterone) that drive some of the most frustrating PCOS symptoms. Here's what you need to know.
What Does Spearmint Do for Hormones?
[Image: Diagram showing spearmint blocking 5α-reductase enzyme, reducing DHT conversion from testosterone]
Spearmint contains compounds that interfere with androgens — the "male hormones" that women with PCOS often have in excess. It works in two ways:
🔹 It reduces the activity of 5α-reductase, an enzyme that converts testosterone into an even more potent form (called DHT) that drives acne and hair loss 🔹 It may block how testosterone binds to receptors in your tissues
The result: lower free testosterone, less DHT activity, and over time, improvement in the symptoms driven by high androgens. That includes acne, excess facial and body hair (hirsutism), and scalp hair thinning.
The Research Behind It
The most-cited study on spearmint and PCOS was done at Maidstone Hospital in the UK (2010). Women with PCOS drank two cups of spearmint tea per day for 30 days. The result: free testosterone dropped significantly, and LH (a hormone that drives testosterone production in the ovaries) also decreased.
The sample size was small — this was an early-stage study — but it was randomized and controlled, which means it was designed carefully. Since then, other small studies have supported the finding. The evidence isn't as strong as for inositol, but it's real. 🍵
Tea or Capsule — What's Best?
Both work, but they're different:
• Spearmint tea: 2 cups per day is the amount used in research. It needs to be real spearmint (Mentha spicata), not peppermint. It's cheap and has zero side effects for most people.
• Spearmint extract capsules: About 400mg of standardized extract per day. More concentrated, more convenient if you don't love tea, and easier to be consistent about dosing.
Either way, consistency matters more than the format. Pick the one you'll actually do every day. ☕
What Symptoms Will Improve and When?
The biggest wins tend to be: ✅ Acne — especially hormonal breakouts along the jawline and chin ✅ Hirsutism — slower growth and finer texture of facial/body hair ✅ Scalp hair — may slow androgenic hair thinning
Timeline: give it 4-8 weeks for acne changes; hirsutism takes longer (3-6 months) because hair grows slowly. You probably won't wake up one day and notice a dramatic change — it's more of a gradual shift. Track your symptoms month by month so you can actually see the difference.
Is Spearmint Safe? Any Side Effects?
Spearmint tea and extract are extremely well-tolerated. The main concern in herbal medicine is high doses of spearmint oil — but that's concentrated essential oil, not the tea or extract form used for PCOS. At tea and supplement doses, no significant safety concerns have been identified in studies.
One note: spearmint has mild anti-androgen properties, which is exactly what makes it useful. But that also means it's not appropriate during pregnancy, where normal hormone levels need to be maintained. Pause if you have a positive pregnancy test. 🌿
The bottom line
Spearmint is low-cost, low-risk, and genuinely interesting for the androgenic symptoms of PCOS — acne, facial hair, and scalp hair. The research is smaller-scale than for inositol or berberine, but the findings are consistent and the risk is essentially zero. Two cups of spearmint tea a day is one of the easiest PCOS interventions you can try.
Questions
Can I use peppermint instead of spearmint?
No — they're different plants. Spearmint (Mentha spicata) contains the rosmarinic acid and other compounds that block androgens. Peppermint (Mentha piperita) is a hybrid with a very different phytochemical profile and hasn't shown the same anti-androgenic effects in studies.
Will spearmint change my cycle or help with ovulation?
The primary effect is on androgens, not ovulation directly. However, lowering excess testosterone can help restore hormonal balance that supports more regular ovulation over time. It's not the same as inositol, which directly addresses ovulation through insulin signaling.
Can I combine spearmint with inositol or other PCOS supplements?
Yes — they work through different mechanisms and can be combined. A common approach is using inositol for metabolic/ovulation support and spearmint for androgenic symptoms (acne, hair). There are no known interactions between them.
Does spearmint actually stop hair growth permanently?
No. Spearmint slows androgen-driven hair growth and may reduce coarseness, but it doesn't permanently remove hair. Existing terminal hairs won't fall out because of spearmint. Think of it as a brake, not an eraser.
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