If you’re noticing a widening part, less density around your crown or more hair in the brush, you deserve more than a one-size-fits-all promise. Hair loss can have several causes, and understanding yours is the first step towards choosing a useful plan.
The condition many people still search for as PCOS was renamed polyendocrine metabolic ovarian syndrome (PMOS) in May 2026. During the transition to the new name, “PCOS” remains a familiar search term. In this article, we use PMOS (formerly PCOS) and explain what research says about the connection with hair thinning, plus natural options you may be considering.
Want to see a transparent, three-ingredient formula? Explore Serenoa Health’s Wonder Pill.
Why the name changed
The name PMOS better reflects the condition’s wider hormonal, metabolic and ovarian features. The Endocrine Society announced the change in May 2026, alongside a three-year transition period, with the new name planned for full adoption in the 2028 international guideline update. Read the announcement.
The name is new. The health experiences are not. Hair and skin changes, irregular cycles and metabolic concerns can all be part of the picture, and individual symptoms vary.
How PMOS may affect hair
Hair thinning linked with PMOS is often described as female-pattern hair loss. It typically appears as gradual thinning over the top of the scalp or a widening part. Androgens, hormones that include testosterone, may play a role, but they are not the only possible cause.
Androgens and DHT
The body can convert testosterone into dihydrotestosterone (DHT) through an enzyme called 5-alpha-reductase. In people whose follicles are sensitive to androgens, DHT may contribute to gradual follicle miniaturisation. Over time, hairs may grow back finer and shorter.
PMOS can involve elevated androgen levels. However, hair thinning on its own does not confirm that your androgens are high. The 2023 international evidence-based guideline notes that female-pattern hair loss without other signs is a relatively weak predictor of biochemical hyperandrogenism.
Insulin resistance and hormonal imbalance
Insulin resistance is one of the processes associated with PMOS. When the body responds less effectively to insulin, the pancreas may produce more of it. Higher insulin levels can influence androgen production and hormone availability, which may add to hormonal imbalance in some people.
That does not mean everyone with PMOS has insulin resistance, or that insulin resistance is the sole reason for hair loss. The international guideline also notes that routinely available insulin tests have limited clinical value and are not recommended for routine assessment.
Start with the right assessment
Hair shedding has more than one possible explanation. Pattern hair loss, temporary shedding after illness or stress, thyroid conditions, low iron and other nutritional issues can look similar, or occur at the same time. Identifying the cause helps you avoid spending months on a treatment that does not match the problem.
Consider speaking with a GP or dermatologist if hair loss is persistent, worsening or causing concern. They can assess the pattern, review your health and medications, and decide whether tests or referral are appropriate. Seek prompt advice for sudden, patchy or painful loss, or changes that leave the scalp inflamed or scarred.
Medical options may be appropriate. Depending on your diagnosis and circumstances, a clinician may discuss topical minoxidil or other treatments. Some medicines require special precautions if pregnancy is possible. Do not stop prescribed treatment or replace it with a supplement without first discussing this with your healthcare professional.
What the evidence says about natural options
Natural ingredients are not automatically proven, or right for every person. Evidence can differ by ingredient, amount, preparation and the people studied. A study of an oil or a concentrated extract does not automatically show that a capsule containing ground plant material will have the same effect.
Saw palmetto: a possible DHT-related option
Saw palmetto is studied for its potential interaction with 5-alpha-reductase, the enzyme involved in converting testosterone to DHT. Reviews of non-prescription hair-loss treatments describe small studies suggesting potential benefit, but the evidence is preliminary. It does not establish saw palmetto as a proven PMOS hair-loss treatment or a replacement for standard care. Review of non-prescription products for androgenetic alopecia.
Pumpkin seed: promising, but not PMOS-specific
A randomised, placebo-controlled study of 76 men with androgenetic hair loss found a higher average hair count after 24 weeks among those taking 400 mg of pumpkin seed oil than among those taking placebo. The study involved men, used oil and did not investigate PMOS-related hair loss. It is an interesting research signal, not proof that pumpkin seed supplements treat hair loss in women with PMOS. Read the study.
Pumpkin seed also naturally contains nutrients, including zinc and fatty acids. Their role in a supplement depends on its ingredient form and actual nutrient content; a whole-seed ingredient should not be assumed to deliver the same amounts as an oil or extract.
Rosemary: distinguish topical research from capsules
Rosemary is often discussed for scalp microcirculation. A small comparative study looked at topical rosemary oil versus 2% minoxidil over six months in people with androgenetic hair loss. That research does not establish that oral rosemary, or rosemary in a multi-ingredient capsule, has the same effect. More research is needed, particularly in people with PMOS.
A clear formula, without inflated promises
Serenoa Health’s Wonder Pill brings together three plant-based ingredients in a vegan capsule:
- Saw Palmetto: 400 mg, included for its potential role in supporting DHT-related pathways.
- Pumpkin Seed: 150 mg, a whole-seed ingredient that provides naturally occurring nutrients.
- Rosemary: 100 mg, included for its potential role in supporting circulation at the follicle level.
The formula is hand-filled in Scotland and contains no added binders, fillers or additives, according to the product information. Three listed ingredients. No proprietary blend to decipher.
Transparency also means being clear about what research can, and cannot, tell us. The Wonder Pill formula itself has not been established in clinical trials as a treatment for PMOS or PMOS-related hair loss. Research on individual ingredients often uses different forms, doses or study populations. Results cannot be guaranteed, and a supplement should not replace diagnosis or prescribed care.
Build a plan that fits you
Keep the next steps simple:
- Track the change. Note when shedding began and whether it is diffuse, patterned or patchy. Consistent photos in similar lighting can help you spot changes over time.
- Ask about possible causes. A clinician can help assess whether hormones, iron, thyroid health, stress, medication or another factor may be involved.
- Choose treatment with evidence in view. Discuss established medical options as well as any supplements you are considering. Tell your healthcare professional what you take, especially if you are pregnant, trying to conceive or using hormonal medication.
- Give the plan time. Hair changes are gradual. Follow the treatment guidance you agree on, and review progress rather than switching products every few weeks.
You do not have to choose between a complicated supplement label and a confident health decision. Start with clarity about the cause, then choose an approach that suits your needs and priorities.
Explore the ingredient amounts and product details: See Wonder Pill. For practical product questions, visit the Serenoa Health FAQ.