Hair Loss Statistics from Real Users
Anonymized, aggregate data from a sample of Trichometrics users who completed AI hair analyses - their Norwood stages, the treatments they use, and how their hair measures up - alongside the most-cited published statistics on how common hair loss is and how well treatments work.
Based on a sample of 751 Trichometrics users who completed AI hair analyses - a subset of our broader community, not our total user base.
Average hair-health scores
Average of each user's most recent AI analysis (0-100 scale).
Where users stand on the Norwood scale
Share of users at each Norwood stage, based on their most recent AI analysis.
Most-used treatment types
Sex
Hair loss statistics from published research
Beyond our own users, decades of dermatology research have quantified how common hair loss is and how well treatments work. The figures below come from published medical literature and professional bodies, each named where it is cited.
Americans affected by androgenetic alopecia, roughly 50 million men and 30 million women
American Academy of Dermatology
of all hair loss in men is androgenetic alopecia, the single most common cause by a wide margin
American Academy of Dermatology
of men have clinically detectable pattern loss by age 50, climbing toward 70% by age 70
Hamilton-Norwood data
Androgenetic alopecia, also called male or female pattern baldness, is by far the dominant cause. The American Academy of Dermatology estimates it accounts for more than 95% of hair loss in men and affects roughly 80 million Americans, about 50 million men and 30 million women. In his original 1975 study, O'Tar Norwood surveyed 1,000 men and produced the seven-stage classification still used on the Norwood scale today, documenting that prevalence and severity climb steadily with each decade: roughly a third of men in their 30s, about half by age 50, and close to 70% by age 70.
Female pattern hair loss
Hair loss is not only a male concern, and the numbers are larger than most people expect.
of women show visible hair loss by age 50, making it far from a male-only condition
American Academy of Dermatology
female pattern hair loss climbed from a few percent of women in their 20s to about a third of women over 70
Gan & Sinclair, 2005
the scale dermatologists use to grade diffuse thinning in women, alongside the Norwood scale for men
Clinical classification
The American Academy of Dermatology reports that around 40% of women show visible hair loss by age 50. A 2005 Australian population study by Gan and Sinclair found that female pattern hair loss becomes steadily more common with age, rising from a few percent of women in their 20s to roughly a third of women in their 70s and beyond. Where men typically recede at the temples and crown, women more often experience diffuse thinning across the top of the scalp, graded on the Ludwig scale rather than the Norwood scale.
How well do treatments work?
The two first-line medications both carry solid clinical trial evidence, with the strongest results when treatment starts early.
of men on finasteride 1mg showed measurable regrowth in the pivotal 2-year trials
Kaufman et al., 1998
of finasteride users had no further visible loss at 5 years, versus about a quarter on placebo
5-year finasteride trial
of people respond to topical minoxidil with stabilized or regrown hair, with 5% outperforming 2%
Pooled minoxidil trials
In the pivotal 2-year finasteride studies (Kaufman et al., 1998), about 65% of men showed measurable regrowth, and in 5-year follow-up roughly 90% had no further visible loss versus about a quarter of men on placebo. A separate 5-year study of Japanese men taking oral finasteride reported improvement or halted loss in the large majority of patients. Topical minoxidil helps a smaller but meaningful share, with pooled trials showing 40 to 60% of users stabilizing or regrowing hair and 5% strengths outperforming 2%. See our full breakdowns of finasteride and minoxidil.
The hair transplant market
For advanced loss, surgery has become a large and fast-growing global industry.
estimated global hair transplant market in the mid-2020s, with double-digit annual growth projected
Industry market analyses
typical cost of a hair transplant in the United States, usually billed per graft
ISHRS / ASPS
common per-graft price, so a 2,000 to 3,000 graft session usually runs into five figures
ISHRS
Market analyses put the global hair transplant market at more than $6 billion in the mid-2020s, with double-digit annual growth projected as demand rises across North America, Turkey, and Asia. According to the International Society of Hair Restoration Surgery, a transplant in the United States typically costs between $4,000 and $15,000, usually billed at $3 to $8 per graft, so a 2,000 to 3,000 graft session commonly runs into five figures. Our hair transplant guide and treatment cost breakdown cover the trade-offs.
How much shedding is normal?
Some daily shedding is expected and not a sign of pattern hair loss on its own.
hairs shed per day is considered normal for a healthy adult scalp
American Academy of Dermatology
hairs on a typical human scalp, with roughly 90% in the active growth (anagen) phase at any time
Dermatology reference data
sustained shedding above this range can signal telogen effluvium rather than pattern loss
Clinical guidance
The American Academy of Dermatology notes that losing 50 to 100 hairs a day is normal for a healthy scalp, which carries roughly 100,000 hairs, about 90% of them in the active growth phase at any moment. Sustained shedding well above 100 hairs a day can point to telogen effluvium or another treatable cause rather than androgenetic alopecia, which is why tracking the trend over weeks matters more than any single day's count.
Frequently Asked Questions
How common is hair loss?▾
Androgenetic alopecia is the most common form by far. The American Academy of Dermatology estimates it accounts for more than 95% of hair loss in men and affects roughly 80 million Americans, about 50 million men and 30 million women. Following the Hamilton-Norwood data, prevalence climbs with age: around half of men have detectable pattern loss by age 50 and close to 70% by age 70.
How much hair loss per day is normal?▾
The American Academy of Dermatology considers shedding 50 to 100 hairs per day normal for a healthy scalp, which carries about 100,000 hairs. People with longer hair may notice the shed strands more even though the count is unchanged. Sustained shedding well above 100 hairs a day can point to telogen effluvium or another treatable cause rather than androgenetic alopecia.
What percentage of hair loss is genetic?▾
In men, more than 95% of hair loss is androgenetic alopecia, a hereditary condition driven by the follicle-shrinking hormone DHT (American Academy of Dermatology). It is polygenic and inherited from both sides of the family. Other causes such as telogen effluvium, thyroid disorders, iron deficiency, and traction alopecia make up the remaining small share.
How effective is finasteride?▾
In the pivotal 2-year trials (Kaufman et al., 1998), about 65% of men on finasteride 1mg showed measurable regrowth. In 5-year follow-up roughly 90% had no further visible loss, versus about a quarter of men on placebo. A separate 5-year study of Japanese men taking oral finasteride reported improvement or halted loss in the large majority of patients.
How much does a hair transplant cost?▾
According to the International Society of Hair Restoration Surgery, a hair transplant in the United States typically costs between $4,000 and $15,000, usually billed at $3 to $8 per graft. A 2,000 to 3,000 graft session therefore commonly runs into five figures. Market analyses put the global hair transplant industry at more than $6 billion in the mid-2020s.
Methodology
The Trichometrics figures are computed from anonymized, aggregate data across a sample of Trichometrics users who completed AI hair analyses - a subset of our total community, not all users. No personal information, photos, or individual records are exposed - only group-level counts and percentages, with any group smaller than 20 people suppressed for privacy. Percentages are rounded. This is observational product data, not a controlled clinical study, and should not be taken as medical advice. The published statistics elsewhere on this page are drawn from peer-reviewed literature and professional bodies, are attributed to their original sources, and are separate from our user data.
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