Adrenal Hormones and Hair: DHEA, Cortisol and What to Check
Came here about DHEA supplements for energy or mood? Please speak to a GP or pharmacist; this page covers what DHEA means for hair.
Adrenal hormones and hair are more closely linked than most people realise. Your adrenal glands, two small glands above the kidneys, make cortisol, adrenaline and DHEA, a building block the body turns into androgens and oestrogens. When adrenal hormones shift, hair can shed, thin on the scalp or grow thicker on the face and body. This guide explains how, what a GP checks, and how to care for your hair meanwhile.
Our hair growth shampoo
Grow Me® Hair Growth Shampoo, £14.95. A sulphate free daily shampoo that supports a healthy scalp environment and helps reduce breakage, so lengths hold on and look fuller.
Adrenal hormones and hair connect in two main ways. DHEA from the adrenal glands is converted into androgens, and DermNet explains that androgens can turn fine vellus hairs into coarse ones on the face and body while thinning scalp hair in people prone to pattern hair loss. Cortisol, the stress hormone, matters too: severe stress is a known trigger for temporary shedding. Rare adrenal conditions such as Cushing's syndrome need a GP, not a supplement.
Key takeaways
- The adrenal glands make cortisol, adrenaline and DHEA; DHEA is converted into androgens and oestrogens elsewhere in the body.
- DermNet lists Cushing syndrome, congenital adrenal hyperplasia and adrenal tumours among the rare causes of excess androgen and unwanted hair growth in women.
- The NHS lists excessive hair growth (hirsutism) among the symptoms of Cushing's syndrome.
- Severe stress, illness and crash dieting can trigger temporary shedding a few months later, according to DermNet.
- Taking DHEA raises androgen activity, which is the wrong direction for anyone prone to pattern thinning or extra facial hair; get medical advice first.
What are adrenal hormones and how do they affect hair?
Adrenal hormones are the hormones made by the adrenal glands: cortisol, which helps the body handle stress; adrenaline, the fight or flight hormone; aldosterone, which balances salt and water; and DHEA, a weak androgen and a building block for stronger sex hormones. Hair follicles respond to several of these, which is why adrenal changes can show up on the scalp, face and body.
The link between adrenal hormones and hair runs mainly through androgens. DermNet explains that follicles vary in how they respond to androgens: in the beard, moustache and body areas, androgens enlarge follicles so fine vellus hairs become thicker, darker terminal hairs, while on the scalp of people with an inherited tendency, androgens shorten the growth phase and produce finer hairs over time. DHEA from the adrenal glands is one source of those androgens, alongside the ovaries and testes.
What is DHEA and why do people link it with hair?
DHEA, short for dehydroepiandrosterone, is a hormone made mostly by the adrenal glands and converted in body tissues into androgens such as testosterone and into oestrogens. People link DHEA with hair because it feeds the androgen pathway, and androgens influence hair thickness on the scalp, face and body.
DHEA levels rise in late childhood, peak in early adulthood and fall gradually with age. Some people buy DHEA hoping to restore energy or mood, but more DHEA means more raw material for androgens. For anyone already prone to pattern thinning, acne or extra facial hair, that is the wrong direction, and DermNet lists androgenic medications among the causes of unwanted hair growth in women. A related question, whether hair changes linked to DHEA settle when you stop it, is covered in our guide is DHEA hair loss reversible. Related reading: our guide to medication related hair shedding.
Before you buy any hormone
DHEA is a hormone, not a vitamin. Talk to a GP or pharmacist before taking it, especially if you have PMOS, acne, thinning hair, a hormone-sensitive condition, or take other medicines.
Which adrenal conditions affect adrenal hormones and hair?
The adrenal conditions that affect hair are uncommon, but they are worth knowing because the hair change is sometimes one of the earlier clues. The main ones are Cushing's syndrome, congenital adrenal hyperplasia, adrenal tumours and, in a different way, Addison's disease. Each needs a GP and usually a specialist, not a hair product.
| Condition | What happens to the hormones | What the hair may do | Other clues the NHS or DermNet describe |
|---|---|---|---|
| Cushing's syndrome | Too much cortisol, sometimes more androgens | Excess hair on face and body (hirsutism) | Weight gain on the tummy, red round face, easy bruising, irregular periods |
| Congenital adrenal hyperplasia | Adrenal glands make extra androgens | Extra facial or body hair; scalp thinning in some | Often found in childhood; milder forms can appear later |
| Adrenal tumour (rare) | Can release excess androgens or cortisol | Sudden new facial or body hair | Rapid change over months; see a GP promptly |
| Addison's disease | Too little cortisol and aldosterone | Hair changes are not a leading symptom | Extreme tiredness, darker patches of skin, weight loss |
Far more often, extra androgen activity in women comes from the ovaries rather than the adrenal glands. The NHS describes PMOS, previously called PCOS, as a hormone condition that can affect hair growth, and our guide to PCOS hair loss covers it in detail. For every hormone cause in one place, see our overview of endocrine alopecia.
Get a discount on the thinning hair range
Join the Watermans mailing list and we will email a discount code straight to your inbox, so you can try the thinning hair range for less. Made in the UK, over 6.5 million bottles sold since 2012.
Can stress hormones make hair fall out?
Stress hormones can contribute to hair falling out, but usually indirectly and temporarily. A major shock to the system, such as severe psychological stress, a serious illness, surgery or crash dieting, can push many growing hairs into the resting phase at once. DermNet calls this telogen effluvium, and the shedding typically shows up two to four months after the trigger.
DermNet explains that in a healthy scalp about 85% of follicles are growing and about 15% are resting, and that a shock can push as many as 70% of growing hairs into rest. The shedding then tapers back to normal over 6 to 9 months in most cases, and new hair continues to grow throughout. The NHS describes stress as the body's reaction to feeling threatened or under pressure and notes that it can change how we eat, sleep and look after ourselves, which also affects hair. Our guide to what causes telogen effluvium walks through the timeline.
Is it hair loss, shedding or breakage?
Hair loss, shedding and breakage are different problems with different causes, and naming the right one helps you and your GP. The NHS says losing 50 to 100 hairs a day is normal, so the useful question is whether you are losing more than your usual amount, and in what form.
Shedding means whole hairs with a small white bulb at the root falling out in greater numbers, often a few months after a stressful event. Hair loss in the stricter sense means follicles producing finer or fewer hairs over time, such as the widening parting of pattern hair loss that androgens can speed up. Breakage means strands snapping part-way along, usually from dryness, heat or rough handling rather than hormones. You can have more than one at once.
How are adrenal hormones and hair problems checked?
A GP checks the link between adrenal hormones and hair problems by asking about your symptoms, looking at the pattern of hair change on your scalp, face and body, and usually arranging blood tests. The NHS says tests for PMOS include blood tests to check hormone levels, and a GP who suspects high cortisol may refer you to a hormone specialist, called an endocrinologist, for further tests.
It helps to arrive with notes: when the change started, whether it came on over months or years, any new facial or body hair, changes to your periods, weight or skin, recent stress or illness, and every medicine or supplement you take, including DHEA. The NHS advises seeing a GP if you are worried about hair loss, and if you are a woman with new thick, dark hair on the face, chest or tummy. If hair changes are sudden and come with rapid weight gain, easy bruising or feeling very unwell, go promptly. If your question is about products or a routine rather than a medical one, you can talk to Gail Waterman, our co-founder, as an AI avatar on the Watermans homepage.
Can diet and lifestyle support hair when hormones shift?
Diet and lifestyle can support hair when hormones shift by removing extra strain, even though they cannot correct an adrenal condition. DermNet recommends a nutritious diet with plenty of protein, fruit and vegetables for anyone with shedding, and advises checking thyroid function, iron, vitamin B12 and folic acid.
The NHS says women aged 19 to 49 need 14.8mg of iron a day and adults 50 and over need 8.7mg. Regular sleep, movement you enjoy and the stress tools on the NHS Every Mind Matters site all help. Avoid crash diets, which DermNet lists as a shedding trigger, and do not start hormone supplements, including DHEA, without medical advice. Our guide on ferritin levels and hair explains the iron test.
How should you care for your hair in the meantime?
Caring for your hair while a hormone question is sorted out means being gentle and giving it time: a mild shampoo on the scalp, conditioner on the lengths, low heat, loose styles and a cut that suits finer hair. DermNet advises gentle handling and avoiding over-vigorous combing and brushing when hair is shedding. These steps do not change hormones, but they reduce breakage and help thinner hair look fuller.
For special occasions, hair building fibres can disguise a see-through parting or crown and wash out with shampoo.
Grow Me® Hair Growth Shampoo £14.95
A gentle, sulfate-free shampoo with caffeine, biotin, rosemary and niacinamide for a clean, comfortable scalp and fuller-looking hair. Vegan and made in the UK.
Hair Building Fibres £19.95
Keratin fibres that cling to existing hair to disguise a thin parting or crown for the day, then wash out with shampoo.
What are the frequently asked questions about adrenal hormones and hair?
What is the link between adrenal hormones and hair?
The adrenal glands make DHEA, which the body converts into androgens, and cortisol, the stress hormone. Androgens influence hair thickness, and severe stress can trigger temporary shedding.
Does DHEA cause hair loss?
DHEA feeds the androgen pathway, so in people prone to pattern thinning it can push hair in the wrong direction. Speak to a GP or pharmacist before taking it.
Can high cortisol affect hair?
Yes. The NHS lists excessive hair growth among the symptoms of Cushing's syndrome, and severe stress can trigger shedding a few months later.
Will hair recover after a stressful period?
Usually. DermNet says shedding from telogen effluvium tapers back to normal over 6 to 9 months in most cases.
Which blood tests look at hormones and hair?
A GP chooses the tests, but hormone levels, thyroid function and iron are common checks when hair is thinning or extra hair appears.
Can a shampoo fix a hormone problem?
No. A gentle shampoo keeps the scalp comfortable and hair looking fuller, but a hormone problem needs medical assessment.
When should I see a GP?
If you are worried about hair loss, have new thick dark facial or body hair, or notice hair changes alongside weight gain, bruising or irregular periods.
What is the bottom line on adrenal hormones and hair?
The bottom line on adrenal hormones and hair is that DHEA and cortisol both matter, but hormone-driven hair changes need a GP and blood tests rather than a supplement. Adrenal conditions are rare, stress-related shedding is common and usually settles, and taking DHEA can make androgen-related thinning worse. Keep your hair care gentle while you get answers.
For gentle everyday washing while you get answers, a mild hair growth shampoo keeps the scalp clean and comfortable.
Sources & references
- DermNet, Hirsutism, checked 18 September 2026.
- DermNet, Male pattern hair loss, checked 18 September 2026.
- DermNet, Telogen effluvium, checked 18 September 2026.
- NHS, Cushing's syndrome symptoms, checked 18 September 2026.
- NHS, Addison's disease symptoms, checked 18 September 2026.
- NHS, Excessive hair growth (hirsutism), checked 18 September 2026.
- NHS, Polyendocrine metabolic ovarian syndrome (PMOS), checked 18 September 2026.
- NHS, Hair loss, checked 18 September 2026.
- NHS, Iron, checked 18 September 2026.
- NHS Every Mind Matters, Stress, checked 18 September 2026.
Watermans products are 100% cosmetic and do not treat medical hair loss. Individual results may vary.
