Hair loss does not only happen to men, but it often gets treated like it does. For women, thinning can feel more confronting because it tends to show up quietly at first, then suddenly becomes all you can see in the mirror: a wider part, more scalp showing under bright light, more hair in the shower, a ponytail that feels smaller.
Hair loss can hit confidence hard. Genetics can play a role, but shedding can also signal something else going on in the body, including thyroid changes, nutrient deficiencies, autoimmune conditions, hormonal shifts or medication side effects. Stress, illness and major life disruption can also push the hair cycle off course.
If shedding feels new, fast or out of character, the smartest first step is a medical check. “You have to fix the underlying medical problem before you’re going to see any improvements,” says dermatologist Dr Elizabeth Bahar Houshmand. Once the driver is clearer, the plan gets simpler.
The hair growth cycle
Hair does not grow in one steady stream. Each follicle moves through a cycle:
- Anagen: the growth phase
- Catagen: the transition phase where growth slows
- Telogen: the resting phase where older hairs shed and the cycle restarts
When the cycle gets disrupted, more hairs can shift into the shedding phase at once. That is why hair loss can feel sudden, even if the trigger happened weeks earlier.
The most common patterns of hair loss in women
1. Diffuse shedding
This looks like more hair everywhere: in the shower, on the brush, on clothing. There is usually no single bald patch.
Common triggers include:
- high stress
- fever or viral illness
- surgery
- rapid weight loss or under-eating
- postpartum changes
- perimenopause shifts
- new medications or stopping a medication
Shedding often shows up eight to twelve weeks after the trigger, which is why it can feel like it came out of nowhere.
2. Gradual thinning through the part or crown
This tends to creep in slowly like a widening part, more scalp visible at the crown, hair feeling finer overall. This pattern can have a genetic component and may be influenced by hormonal changes.
3. Patchy loss
This looks like distinct areas of missing hair. Patchy loss needs earlier assessment because the causes and treatments differ from general shedding.
4. Breakage that looks like hair loss
Sometimes hair is not falling from the root, it is snapping mid-shaft. Breakage can mimic thinning, especially around the hairline and ends.
Common drivers include:
- heat styling
- bleaching and frequent colouring
- tight ponytails, extensions or traction styles
- aggressive brushing, especially when wet
- scalp build-up that makes hair fragile
The quick self-check: shedding or breakage?
This helps guide what to do next.
- Shedding: hairs come out with a small white bulb at the end
- Breakage: shorter pieces, no bulb, ends look frayed
If it is mostly breakage, the plan focuses on hair handling and scalp health. If it is mostly shedding, the plan focuses on triggers, medical factors and regrowth support.
What to track before an appointment
A short timeline can speed up diagnosis.
- When did it start, and did it change suddenly?
- Is it shedding, breakage or both?
- Is it diffuse or concentrated at the part, crown or hairline?
- Any changes in the past three to four months: stress, illness, travel, diet changes, weight loss, new medications, stopping hormonal contraception
- Scalp symptoms: itch, flakes, soreness, burning, pimples
- Other body changes: fatigue, changes in periods, cold intolerance, constipation, new acne or increased facial hair
A monthly photo baseline helps too. Take a photo of our part line, temples and crown in the same lighting.
Tests a GP or dermatologist may consider
Hair loss can be the first visible sign of an internal issue, so bloodwork can be useful.
Common checks include:
- Iron studies including ferritin
- Thyroid function
- Vitamin D
- B12 and zinc in some cases, depending on diet and symptoms
- Hormone markers in some cases, especially if cycles are irregular or there are signs of androgen changes
The goal is not supplement stacking. The goal is finding a gap and fixing the gap.
What helps while you are waiting for answers
1. Cut the accidental damage
Reducing breakage can make hair look fuller fast, even before regrowth kicks in.
- lower heat, fewer hot-tool days
- looser hairstyles, especially around the hairline
- wide-tooth comb for detangling, especially when wet
- detangle from ends upward
- avoid harsh scalp scrubs if the scalp is irritated
2. Treat the scalp like skin
A sore, itchy or inflamed scalp can affect hair growth.
If dandruff and itch are present, avoid heavy oiling as a default. Some scalps flare with oils, especially if there is a yeast-driven component. If the scalp feels sore, burning or tender, mention it in your appointment. Scalp discomfort is a clue, not a nuisance.
3. Eat for hair consistently
Hair responds to steady input, not one perfect week.
Prioritise:
- enough total food, not chronic restriction
- protein at breakfast and lunch, not only at dinner
- iron-rich foods, paired with vitamin C
- omega-3 sources
4. Be cautious with supplements
Some supplements can interfere with blood tests or duplicate nutrients already covered in a multivitamin. If bloodwork is planned, it is often better to test first, then supplement with purpose.
When to seek medical care sooner
Book prompt review if there is:
- sudden patchy hair loss
- scalp pain, burning, oozing or sores
- rapid shedding plus fatigue, weight changes or cycle changes
- eyebrow thinning alongside scalp hair loss
If hair loss is affecting day-to-day wellbeing, that is also a valid reason to seek help early.
The bottom line
Hair loss is common, but it is not something to brush off as “just ageing” without checking what is driving it. The most effective plan matches the pattern, identifies the trigger and protects the hair you have while the cycle resets. Once the cause is clearer, treatment decisions get clearer too, and progress becomes easier to track.
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