Menopause hair · Evidence led

Hair thinning after 50: causes worth checking

Not every change after 50 is menopause. A calm checklist of the causes worth thinking about before you decide what to do.

When women over 50 came to the clinic, many had already decided the cause: "It's my age" or "It's the menopause". Sometimes they were right. Often there was more to it, such as low iron after years of heavy periods, a thyroid change, a new medicine or simply a style that had been pulling for decades. Finding those pieces mattered, because some of them can be put right.

This checklist covers the causes worth thinking about when hair thins after 50. It is general education to help you have a better conversation with a hair expert or your GP. Start with our menopause hair loss guide if you want the background first.

1. Female pattern hair loss

This is the most common reason for slow, gradual thinning on top of the head in later life. It becomes more common with every decade. In a UK study of 377 women, it was found in 6% of women under 50 and in 38% of those aged 70 and over.^[1] A Sheffield NHS leaflet estimates it affects around 10% of women at 50 and over 30% at 70.^[3]

Look for a wider centre parting, finer hairs on top, a front hairline that stays in place and a thinner ponytail.^[6][3] Genetics play a part and there may be a family link on either side.^[4][6] Many women with this pattern have normal hormone levels, so normal blood tests do not rule it out.^[3]

2. Ageing hair

Separate from menopause, hair changes with age. Hair density and the diameter of each hair fall over time.^[1][2] Many women also notice texture changes after menopause, with hair feeling drier, coarser or less manageable.^[10] Grey hair can behave very differently from pigmented hair. None of this is a failure on your part.

3. Iron and ferritin

Ferritin is a measure of the body's iron stores. Lower ferritin has been associated with some types of hair loss in women, though not all studies agree.^[11][12][13] Heavy periods in perimenopause, a low iron diet or problems absorbing iron can all lower it.

What matters most:

• Ferritin is interpreted in context by your clinician, not against a target number from social media.^[12][13]
• If a test shows deficiency, your GP may recommend iron at a specific dose and look for the cause.^[14]
• Do not guess a high dose yourself. Treating iron without a proven deficiency is not well supported.^[12][14]

4. Thyroid changes

Both an underactive and an overactive thyroid can affect hair. Clues include tiredness, feeling unusually cold or hot, palpitations and weight change.^[4] Some thyroid symptoms overlap with menopause, which is one reason a GP may consider a thyroid test.^[4]

5. Shedding after a trigger

Telogen effluvium is a sudden, all over shed that usually starts two to four months after a trigger such as illness, an operation, high fever, sudden weight loss or severe stress.^[15][16] It often eases over 6 to 9 months once the trigger has passed.^[15][17] Read more in shedding, thinning or breakage.

6. Medicines and supplements

Some medicines can cause hair shedding. If your hair changed after starting something new, talk to your GP or pharmacist. Never stop a prescribed medicine yourself.^[5]

Supplements matter too. High dose biotin, found in many hair and nail products, can distort some laboratory tests, including some heart tests.^[18][19] Always tell whoever takes your blood what you take. The lab or your clinician will tell you whether anything needs pausing.

7. Diet and weight change

Crash dieting can affect hair growth.^[4] Very low protein intake, skipping meals or losing weight quickly can all play a part. If your appetite has changed or you are losing weight without trying, mention it to your GP. Our guide to nutrition for menopausal hair covers the basics.

8. Styling, colour and tension

Years of tight ponytails, braids, extensions, heat or chemical treatments can lead to breakage and, over time, thinning around the hairline. Women's Health Concern suggests that using fewer straighteners and dryers may improve how menopausal hair looks.^[4] Gentle changes here are among the quickest wins. See our gentle haircare routine.

9. Scalp conditions and scarring hair loss

Itch, redness, scale, soreness or burning point to the scalp itself and need a GP rather than a new shampoo.^[4]

Two scarring conditions are especially worth knowing about after 50:

• Frontal fibrosing alopecia can move the front hairline back in a band and affect the eyebrows. The skin can look smoother or paler. There may be itch, burning or no discomfort at all.^[8]
• Central centrifugal cicatricial alopecia (CCCA) often starts at the crown, especially in middle aged Black women. Early signs can include breakage, bumps, tenderness or itch, though some people feel nothing.^[9]

Scarring hair loss can become permanent, so early assessment matters. Treatment aims to protect the follicles that remain.^[8][9]

10. Androgen related conditions

Female pattern hair loss can accompany conditions with higher androgen levels, such as polycystic ovary syndrome. New facial hair, acne or unusual cycle changes may be worth mentioning. Many women with thinning have normal androgen levels.^[6][3]

Your appointment checklist

Which tests might your GP consider?

There is no universal menopause hair test. Not everyone needs every test. Depending on your history, your GP may consider:^[4][20]

• Full blood count and ferritin, for diffuse shedding, tiredness, heavy periods or a low iron diet
• Thyroid function, if your symptoms suggest it
• Selected nutrient tests, such as B12, folate or vitamin D, if your diet or symptoms point that way^[21]
• Androgen tests, if there are signs such as new facial hair or acne^[6]

Hormone tests are usually not needed to diagnose menopause in otherwise healthy women aged 45 or over.^[20] If the tests come back normal, that does not mean you imagined the change. Ask what the scalp examination suggests and what happens next.^[6][7]

Who to see first

Everything in one place

The Menopause Hair Guide brings this checklist together with a printable GP script, a blood test conversation sheet, a hair expert checklist and a 12 week plan.

Keep reading

• Menopause hair loss: a clear starting point
• Menopause hair loss treatments: an evidence guide
• Nutrition and menopausal hair: food first

This article is general education, not medical advice. It cannot diagnose or treat any condition. Speak to a qualified hair expert or your GP about hair changes and seek medical help promptly for the warning signs above.