2 in 3
Americans with Alzheimer's are women
A disease that discriminates — and a foundation built to respond
Nearly two out of every three Americans living with Alzheimer's are women. This isn't a footnote in the story of dementia. It's the story — and it's one medicine spent a century not asking about.
4.5 million women. 2.9 million men.
Of the 7.4 million Americans age 65+ living with Alzheimer's today, women outnumber men by roughly 1.5 to 1 — 61% versus 39%. At every stage of the disease, more of the people affected, and more of the people caring for them, are women.
61%
of all Alzheimer's patients are women
Source: Alzheimer's Association, 2026 Facts and Figures Report
It's not just because women live longer
For decades, the explanation offered was simple: women get Alzheimer's more because they live longer than men. Research has since complicated that story. Age-specific rates — comparing women and men in their 60s, 70s, and 80s — show meaningfully higher rates in women at every decade, not just in old age overall. Longevity is part of the picture. It is not the whole picture.
In their 60s
By 65, a woman's lifetime risk is about 1 in 5 — more than twice her risk of developing breast cancer
In their 70s
About 1 in 6 women over 70 already has Alzheimer's
In their 80s and 90s
Nearly a third of people over 85 have dementia, rising to half by their 90s — and women outnumber men more than 2 to 1 at that age
Source: Dr. Murali Doraiswamy (Duke University), Being Patient interview, 2017; citing research showing age-specific rates approximately twice as high in women per decade
The first patient was a woman
In 1906, Dr. Alois Alzheimer described the disease that would carry his name for the first time — in a 51-year-old patient named Auguste Deter. The condition has borne a woman's case history from its very first page. It took more than a century for science to seriously ask whether her sex mattered to her diagnosis.
"Auguste Deter, 1906 — the first recorded Alzheimer's patient"
Source: Dr. Alois Alzheimer's 1906 case presentation — historically well-established
The biology is only starting to be understood
Researchers are exploring several biological threads: the sharp drop in estrogen at menopause, which appears to accelerate the buildup of the proteins associated with Alzheimer's; genes carried on the X chromosome, which women have two copies of; and differences in brain metabolism and immune response between men and women. None of this is settled science yet — which is itself part of the problem.
Estrogen & Menopause
The sharp drop in estrogen at menopause may accelerate the buildup of proteins associated with Alzheimer's.
X Chromosome
Women carry two copies of the X chromosome, which may carry genes relevant to brain health and disease risk.
Brain Metabolism
Differences in brain metabolism and immune response between men and women may influence how Alzheimer's develops.
Note: These are active research areas — findings are preliminary and evolving.
Decline can move faster, and hide longer
Some research finds that women with mild cognitive impairment decline up to twice as fast as men with the same diagnosis. At the same time, women's typically stronger verbal skills can mask early symptoms in conversation — the very symptoms doctors are trained to listen for — delaying the diagnosis that would let care start sooner.
Up to 2x faster
Rate of MCI cognitive decline in women vs. men (some research finds)
Diagnosis Delayed
Women's stronger verbal skills can mask the early symptoms doctors are trained to listen for
Source: Alzheimer's Association International Conference presentation, cited in Milken Institute report (2016). Single-study finding; not yet broad consensus.
For decades, the research left women out
Until the early 1990s, most major clinical trials were conducted almost exclusively in men — including the landmark Aspirin Study that still shapes how millions of people, of both sexes, are told to prevent heart attacks today. It took an act of Congress, the NIH Revitalization Act of 1993, to require that women be included in federally funded clinical trials at all.
"Until the 1990s, most major clinical trials were conducted almost exclusively in men."
Pre-1993
Most clinical trials excluded women entirely
1993
NIH Revitalization Act required women be included in federally funded trials
Today
Alzheimer's research is still catching up on decades of lost data
Source: Dr. Murali Doraiswamy (Duke University), Being Patient interview, 2017
Alzheimer's research is still catching up
Scientists didn't begin seriously studying sex differences in Alzheimer's until roughly the early 2010s — more than a hundred years after the disease was first described. We are still in the early years of understanding a disease that has always affected women most.
100+
Years of Lost Time
Between the first Alzheimer's case (1906) and serious sex-difference research beginning (~2012)
~10
Years of Dedicated Research
How long dedicated women's Alzheimer's research has actually been underway
Source: Dr. Murali Doraiswamy (Duke University), Being Patient interview, 2017 — sex-difference research in Alzheimer's wasn't seriously underway until roughly 2012–2013
The second burden: caregiving
Alzheimer's doesn't only affect women as patients. Roughly two-thirds of the nation's unpaid dementia caregivers — wives, daughters, daughters-in-law — are women too. The same disease that targets women disproportionately is then disproportionately cared for by women as well.
Unpaid dementia caregivers in the U.S. are women
Source: Alzheimer's Association, 2026 Facts and Figures Report
Women shoulder the cost, too
of $120.3B total dementia burden borne by women (76%)
Cost to treat a woman's dementia vs. a man's, per case (Milken Institute, 2016)
A 2016 Milken Institute analysis found that women bore 76% of the total economic burden of dementia in the United States — $91.1 billion of $120.3 billion — and that treating a woman's dementia cost nearly double, per case, what it cost to treat a man's.
Source: Milken Institute, "The Price Women Pay for Dementia," 2016 (2012 baseline data)
Caregiving has a career cost
more likely
Female caregivers vs. male caregivers to leave their jobs to provide care
Female caregivers are about 40% more likely than male caregivers to leave their jobs to provide care. Multiply that across millions of households, and the result is a quiet, largely uncounted drag on women's lifetime earnings, retirement savings, and financial independence.
Lost earnings
Lost retirement savings
Lost financial independence
Source: Milken Institute, "The Price Women Pay for Dementia," 2016; originally sourced to MetLife Mature Market Institute (2011)
A perfect storm, not a coincidence
Genetics, hormones, longer lifespans, diagnostic bias, decades of research built around a male-default patient, and a caregiving system that defaults to women too — none of these forces acts alone. Together, they explain why Alzheimer's has become, quietly, one of the starkest gender disparities in American health.
Genetics & Hormones
Estrogen drop at menopause may accelerate Alzheimer's protein buildup
Longer Lifespans
Women live longer — but longevity alone doesn't explain the gap
Diagnostic Bias
Verbal strengths mask symptoms; women are diagnosed later
100 Years of Male-Default Research
Clinical trials excluded women until Congress intervened in 1993
Caregiving Falls to Women
2 in 3 unpaid dementia caregivers are women — on top of being patients
Economic Burden
Women bear 76% of the total dementia economic burden in the U.S.
Without action, the gap widens
On current trends, the number of women living with Alzheimer's is projected to nearly double by 2040. The Milken Institute projects the annual economic burden on women alone could triple over the same period, to roughly $274 billion a year.
4.5M
Women with Alzheimer's
Today (2026)
The baseline we're starting from
~9M
Women with Alzheimer's
2040 (Projected)
On current trends, nearly double
Source: Milken Institute, "The Price Women Pay for Dementia," 2016 projection
What could change the trajectory
More sex-specific research funding. Earlier, better diagnostics that don't rely on tests biased toward male symptom patterns. Real workplace support for caregivers. Modeling suggests that cutting caregivers' lost workdays by 60% alone could add hundreds of billions of dollars back to the economy by 2040 — while giving millions of women back their careers.
Sex-Specific Research Funding
Fund studies that treat women as the primary subject, not an afterthought
Earlier, Better Diagnostics
Develop tests that don't rely on symptom patterns biased toward men
Real Caregiver Support
Workplace policies that don't force women to choose between career and care
Source: Milken Institute, "The Price Women Pay for Dementia," 2016 — modeled scenario (60% reduction in caregiver lost workdays)
Where Memory Lane TV fits in
Memory Lane Foundation was built on the belief that people living with dementia — and the people who love them — deserve care designed around how memory actually works, not around who research has historically prioritized. Our non-drug, sensory-based approach exists because the women and men facing this disease today can't wait for the research gap to close on its own.
Designed Around Sesory Stimulation
Non-drug, sensory-based approach built on how memory actually works
For Patients & Care partners
Supporting both the person living with dementia and the people who love them
Closing the Gap Now
Because the women facing this disease today can't wait for research to catch up
100+
Personalized films and media for Every Life
Gender-specific reminiscence content — including 100+ films produced specifically for women — plus programming for LGBT+, faith-based, and cultural communities. Because memory is personal.
Join us in closing the gap
Alzheimer's has always been a women's disease. It's time our research, our funding, and our care caught up to that fact. Learn how Memory Lane Foundation is working to change what's possible for the millions of women — patients and caregivers alike — living this every day.
Sources used
- Alzheimer's Association, 2026 Alzheimer's Disease Facts and Figures (alz.org) — current prevalence and caregiver statistics
- Dr. Murali Doraiswamy (Duke University), interview with Being Patient, "Alzheimer's Is a Disease That Discriminates: Why Women?" (July 2017)
- Milken Institute, The Price Women Pay for Dementia: Strategies to Ease Gender Disparity and Economic Costs (Sindhu Kubendran, Ross DeVol, Anusuya Chatterjee; March 2016)
- Memory Lane Foundation's existing March 8 Facebook post, "The Hidden Crisis: Alzheimer's & Women," for brand-voice continuity
Alzheimer's Is a Women's Disease