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Hair loss FAQ

Hair loss questions, answered

The questions people ask most about hair loss, answered briefly and with sources.

Common questions

Is it normal to lose hair every day?

Yes. Shedding around 50 to 100 hairs a day is normal (AAD). More than that, or noticeable thinning, is worth a check.

What causes most hair loss?

Androgenetic alopecia (pattern hair loss) is the most common cause in both men and women. Others include telogen effluvium, alopecia areata, thyroid disease, iron deficiency, some medications and hairstyles that pull.

Does wearing a hat cause hair loss?

No, unless it's tight enough to pull hair constantly.

Is hair loss inherited from your mother's side?

Genes from both parents contribute to pattern hair loss.

Can stress make hair fall out?

Yes. A major stressor can trigger telogen effluvium, a temporary shedding that usually starts two to three months later and recovers.

Which hair loss treatments are proven?

Topical minoxidil, and for men prescription finasteride, have the strongest evidence for pattern hair loss. Talk to a doctor about which suits you.

When should I see a doctor?

If hair loss is sudden, patchy, comes with scalp pain or scaling, or you're losing hair quickly. A dermatologist can diagnose the cause.

Is a hair transplant permanent?

Transplanted follicles from the back of the scalp usually keep growing for life, but surrounding native hair can continue to thin.

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Sources

By Scott Blaine Hoffman, founder of Regrowth.com, 30+ years in the hair-loss field. Updated October 29, 2026.

Educational information, not medical advice. Talk to a doctor or dermatologist about your own hair loss before starting or stopping any treatment.