Spearmint Tea for PCOS: How It Reduces Testosterone Naturally

If you have PCOS, you’ve probably heard someone mention spearmint tea as a natural way to lower testosterone. It’s one of the most talked-about supplements in online PCOS communities, but what does the actual science say? Let’s dig into the clinical research, separate fact from hype, and help you understand whether this simple herbal tea deserves a place in your daily routine.

The PCOS-Androgen Problem

Polycystic ovary syndrome affects roughly 8-13% of reproductive-age women, and elevated androgens (male-type hormones like testosterone) are a central feature. This excess testosterone drives many of the uncomfortable symptoms you might experience: persistent acne, unwanted facial and body hair, hair loss on your scalp, and irregular periods. Managing these androgens is a cornerstone of PCOS treatment, which is why doctors often prescribe anti-androgen medications. But not everyone can tolerate them, and many people want to explore dietary and herbal strategies first.

That’s where spearmint tea enters the conversation.

What the Clinical Research Shows

The strongest evidence for spearmint tea and PCOS comes from randomized controlled trials. In 2010, researchers at Sunderland University published a landmark study in the journal Phytotherapy Research. They enrolled 42 women with confirmed PCOS and randomly assigned them to drink either spearmint herbal tea or a placebo herbal tea. Each group consumed two cups per day for 30 days.

The results were compelling. Women drinking spearmint tea showed significantly lower free and total testosterone levels compared to the placebo group. They also showed higher levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), indicating an improvement in the LH/FSH ratio, which is often abnormal in PCOS. Beyond the numbers, women in the spearmint group reported subjective improvements in unwanted hair growth.

A more recent 2024 study published in the Journal of the Academy of Nutrition and Dietetics expanded on this research with a larger sample size of 150 participants over 12 weeks. This trial tracked not just women with PCOS but also non-PCOS controls. The findings showed approximately 15% testosterone decline in the PCOS group and 12% in non-PCOS women, with additional reductions in DHEA and androstenedione, other androgens that contribute to excess hair growth and acne.

These studies establish that spearmint tea produces measurable hormonal changes. But it’s important to understand what these changes mean in practical terms.

How Spearmint Tea Works: The Mechanism

Spearmint contains two main active compounds: rosmarinic acid and a group of flavonoids. Researchers believe these compounds work by reducing the production or circulation of androgens, though the exact mechanism is still being investigated.

One leading hypothesis involves sex hormone-binding globulin (SHBG), a protein in your blood that binds to hormones and makes them biologically inactive. If spearmint increases SHBG levels, it would reduce the “free” (biologically available) testosterone your cells can actually use. However, the Grant 2010 trial showed reductions in both free and total testosterone, suggesting SHBG may be part of the picture but isn’t the whole story.

Another possibility is that spearmint directly inhibits the enzymes involved in androgen synthesis, reducing production at the source. The exact pathway likely involves multiple mechanisms working together.

While hormone levels shift significantly within a month in controlled trials, objective improvements in hair growth take longer to appear. Reducing the hormonal signal does not immediately reverse hair that is already in its growth phase, which is a normal feature of how hair follicles respond to hormonal changes, not a failure of the treatment.

What Spearmint Tea Actually Improves

Let’s be clear about what the evidence does and doesn’t support:

Testosterone and Androgen Levels: Spearmint tea consistently reduces circulating androgens in clinical trials. This is the strongest, most reproducible finding.

Subjective Hirsutism: Women in the Grant trial reported improved unwanted hair growth, which makes sense if testosterone is lower.

Hormonal Acne: The androgen reduction could plausibly improve hormonal acne over time, though no clinical trial has specifically measured this outcome yet.

What It Does NOT Fix: Spearmint tea does not address insulin resistance, does not cause weight loss, does not improve fertility outcomes directly, and does not correct the underlying ovulatory dysfunction in PCOS. If insulin resistance is a major driver of your PCOS, spearmint tea alone won’t solve that problem.

Important Limitations of the Research

Before you stock up on spearmint tea, understand the boundaries of what we know:

Small Sample Sizes: The original landmark trial involved just 42 women. The newer 2024 study used 150 participants split across PCOS and non-PCOS groups, which is larger but still relatively modest for nutritional research.

Short Duration: Neither trial extended beyond 12 weeks, and formal long-term safety studies have not been conducted. We don’t know what happens if you drink spearmint tea for years.

Objective Hair Growth: The original study found no significant change in objectively measured hair growth using the Ferriman-Galwey scale over 30 days. Researchers noted this was likely because hair grows on a multi-month cycle, and hormonal changes don’t immediately stop existing hairs from growing.

Modest Effect Size: The testosterone reductions, while statistically significant, are small compared to prescription anti-androgens. Spironolactone, a common anti-androgen medication, typically produces 20-50% testosterone reductions. Spearmint tea’s 15-30% reduction is meaningful but more modest.

Missing Outcomes: The trials measured hormone levels and subjective symptom reports but did not measure fertility, cycle regularity, pregnancy rates, or other clinically important outcomes.

How to Use Spearmint Tea for PCOS

If you decide to try spearmint tea, the clinical evidence supports this approach:

Dosage: Two cups (approximately 400-500 ml) per day, divided into one cup in the morning and one in the evening.

Duration: Minimum 30 days to observe measurable hormone changes, though 8-12 weeks may be needed to see visible improvements in acne or hair growth.

Type: Use loose-leaf spearmint herbal tea or tea bags made from spearmint leaves specifically. Spearmint (Mentha spicata) is different from peppermint, so verify the label.

Consistency: The research showed benefits with regular daily consumption, so sporadic use is unlikely to help.

Safety Note: Spearmint tea has a long culinary history with minimal reported toxicity. However, traditional use is not the same as modern clinical safety data. Talk to your healthcare provider before starting, especially if you’re on hormonal medications or have a history of kidney disease.

Spearmint Tea as Part of Your PCOS Strategy

Here’s the honest take: spearmint tea is not a cure for PCOS. It’s a safe, accessible, evidence-based dietary intervention that can help manage one specific symptom (androgen excess) alongside medical treatment and lifestyle strategies.

Think of it like this. PCOS is a complex condition driven by hormonal imbalance, insulin resistance, inflammation, and genetic factors. Spearmint tea addresses only the androgen piece of that puzzle. If your PCOS is primarily driven by insulin resistance, weight gain, or inflammation, spearmint tea alone won’t fix your underlying problem. But if androgen-driven symptoms like acne, unwanted hair growth, or hair loss are bothering you, spearmint tea offers a gentle option worth trying.

Most functional medicine practitioners recommend combining spearmint tea with other evidence-based approaches: inositol supplementation for insulin resistance, regular exercise, an anti-inflammatory diet, and working with your doctor on any medications you may need.

Getting Started Safely

If you’re interested in trying spearmint tea, start with a conversation with your healthcare provider. Mention it before trying it, especially if you’re on hormonal medications, blood thinners, or have any medical conditions. Once you get the green light, you can:

• Purchase spearmint herbal tea from a reputable source
• Brew it fresh daily (two cups per day)
• Track your symptoms over 8-12 weeks: acne, unwanted hair, mood, cycle changes
• Check in with your doctor if you’re also monitoring hormone levels

Cycla’s AI hormone coach can help you track your symptoms and understand patterns in your data that might show whether spearmint tea is working for your individual body.

The Bottom Line

Spearmint tea has solid clinical evidence supporting its ability to reduce testosterone in women with PCOS. The effect is modest compared to prescription medications, but it’s safe, inexpensive, and accessible. It won’t cure PCOS or address insulin resistance, but it may meaningfully reduce androgen-driven symptoms like acne and unwanted hair growth over 8-12 weeks of consistent use.

If you’re looking for a natural complement to medical treatment and lifestyle changes, spearmint tea is worth discussing with your healthcare provider. And remember, managing PCOS is a marathon, not a sprint. Small changes layered together usually create bigger results than chasing any single solution.

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Related Articles

Learn more about PCOS management with these complementary guides:

• Inositol for PCOS: The Research-Backed Supplement - Explore the evidence for inositol supplementation, which addresses insulin resistance alongside androgen management
• Anti-Inflammatory Diet for PCOS: Foods to Eat and Avoid - Discover dietary approaches that work synergistically with supplements like spearmint tea
• Lean PCOS vs. Obese PCOS: Treatment Differences - Understand how treatment strategies vary based on your PCOS subtype