The gap is not small and it is not new. Among Black Americans ages 70 and older, 21.3% are living with Alzheimer's, according to the Alzheimer's Association. Cardiovascular and metabolic conditions that run higher in Black communities, including high blood pressure and type 2 diabetes, are part of the reason. So is genetics: a 2022 analysis in Aging found roughly 37% of African Americans carry at least one copy of the APOE e4 risk gene, and each copy roughly doubles Alzheimer's risk. But controlling the conditions you can control still moves the needle, and getting evaluated early decides what treatment is even on the table.
Normal aging versus a warning sign
The single most useful distinction: occasional forgetfulness is typical aging, but memory loss that disrupts daily life is not. The Alzheimer's Association lists 10 warning signs, each paired with what normal aging actually looks like.
The 10 warning signs, in plain language:
- Memory loss that disrupts daily life: asking the same question over and over, or leaning on notes and family for things you used to handle. Normal aging: forgetting a name or appointment, then remembering it later.
- Trouble with planning or numbers: losing track of monthly bills or a familiar recipe. Normal aging: an occasional math error.
- Difficulty with familiar tasks: getting lost driving to a known place. Normal aging: needing help with new microwave settings.
- Confusion with time or place: losing track of dates, seasons, or how you got somewhere. Normal aging: mixing up the day of the week, then sorting it out.
- Trouble with vision and spatial sense: misjudging distance or contrast. Normal aging: vision changes from cataracts.
- New problems with words: stopping mid-conversation, unable to continue. Normal aging: occasionally hunting for the right word.
- Misplacing things and not being able to retrace steps: putting items in odd places and being unable to find them. Normal aging: misplacing things but retracing your path.
- Poor judgment: a clear change in handling money or grooming. Normal aging: one bad decision now and then.
- Withdrawal from work or social activities: dropping hobbies, projects, or family gatherings.
- Changes in mood or personality: becoming confused, suspicious, fearful, or easily upset, especially outside familiar settings.
One sign on its own is not a diagnosis. A pattern of them, especially several together over months, is the cue to get evaluated rather than wait.
Why Black families get diagnosed late
Late diagnosis is the rule, not the exception. A 2025 study in Alzheimer's & Dementia tracked 710 older adults who developed dementia and found only 54% were diagnosed on time. Black older adults had more than double the odds of being underdiagnosed compared with getting a timely diagnosis (odds ratio 2.15). The delay has several drivers, and most are not about the patient's biology.
Symptoms get normalized. The Alzheimer's Association found that 55% of Black Americans think significant memory or cognitive loss is a natural part of aging. When a parent's confusion gets filed under "just getting old," no one books the appointment. Mistrust plays a role too: 62% of Black Americans believe medical research is biased against people of color, and half say they have faced discrimination while seeking care. And clinician bias cuts the other direction. Black patients often have to present with more severe symptoms before a doctor records a dementia diagnosis, which means the workup starts later in the disease, when fewer options remain.
Late diagnosis costs real things. It delays treatment that works best early, and it shrinks the window for the patient to take part in their own planning: finances, legal decisions, where they want to live, what care they want. Waiting does not protect anyone. It just removes choices.
The risk factors you can act on
About 45% of dementia cases are linked to 14 modifiable risk factors across a lifetime, according to the 2024 Lancet Commission on dementia. Several of these are more common in Black communities, which means the room to lower risk is also larger.
The factors on the Lancet list include high blood pressure, diabetes, hearing loss, physical inactivity, depression, smoking, obesity, high LDL cholesterol, untreated vision loss, excessive alcohol, traumatic brain injury, air pollution, social isolation, and less education early in life. The two with the clearest, most actionable payoff for Black adults are blood pressure and blood sugar. Keeping blood pressure in range and managing diabetes protects the small blood vessels in the brain, which is where a large share of the disparity in dementia risk lives. Treating hearing loss with hearing aids and staying physically and socially active add to the protection. None of this guarantees you avoid dementia. All of it lowers the odds, and the same habits protect the heart at the same time.
Why early evaluation is worth it
An evaluation is not a one-way door to a dementia label. The first job is to rule out conditions that mimic dementia and reverse with treatment. Low vitamin B12, an underactive thyroid, and depression can all produce memory and thinking problems that look like early Alzheimer's, and all three improve when the underlying cause is treated. A thorough first visit checks for these before anyone accepts a dementia diagnosis as final.
Diagnosis has also changed fast. In May 2025 the FDA cleared the first blood test for Alzheimer's, which measures a ratio of two proteins (pTau217 and beta-amyloid) and agrees with brain PET scans in more than 90% of cases for people 55 and older with symptoms. That makes confirmation cheaper and far less invasive than a spinal tap or PET scan.
There are now drugs that target the disease itself. Lecanemab (Leqembi) won full FDA approval in July 2023 after the CLARITY-AD trial of 1,795 people with early Alzheimer's showed it slowed cognitive decline by 27% over 18 months. Donanemab (Kisunla) followed in 2024. The honest framing matters: these are not cures, the benefit is a slowing of decline rather than a reversal, and they carry a real risk of brain swelling or small bleeds (called ARIA) that is higher in people who carry APOE e4, the gene more common in Black adults. They require regular MRI monitoring, and they only work in the early stage, which is exactly the stage Black patients are most likely to be diagnosed past. The drugs are an argument for evaluating sooner, not later.
Supporting the caregiver
Dementia care in Black families lands heavily on Black women, who in 2019 provided an estimated 60% of the unpaid care hours for people living with Alzheimer's and related dementias. That work is physical, financial, and emotional, and Black caregivers report the highest concern that providers do not listen to them because of their race. A caregiver who is exhausted and dismissed cannot advocate well. Bring a second person to appointments, write the questions down in advance, and ask the clinician directly what support, respite, and community resources exist. Caregiver health is part of the patient's care, not separate from it.
How to get care
Start with a primary care clinician who takes your concern seriously and orders a full workup, including bloodwork for treatable causes and a referral to a neurologist or memory clinic if needed. If you have felt dismissed before, finding a clinician who listens is not a luxury, it is part of getting an accurate diagnosis. You can find a Black primary care doctor or neurologist in our directory. Go in with a written list of the specific changes you have noticed and roughly when they started. That timeline is one of the most useful things you can hand a clinician.
Frequently asked questions
Is forgetfulness a normal part of getting older? ▼
Some forgetfulness is normal. Forgetting a name or appointment and recalling it later, or occasionally misplacing keys and retracing your steps, is typical aging. Memory loss that disrupts daily life, such as asking the same question repeatedly, getting lost in familiar places, or no longer managing money or medications, is not normal and is worth evaluating.
Why are Black Americans at higher risk for Alzheimer's? ▼
Older Black Americans are about twice as likely as older white Americans to develop Alzheimer's or another dementia. The drivers include higher rates of high blood pressure and diabetes that damage blood vessels in the brain, genetic factors such as the APOE e4 gene, and structural barriers to early diagnosis and care. Several of these risk factors can be managed, which lowers risk.
Can dementia symptoms be caused by something treatable? ▼
Yes. Low vitamin B12, an underactive thyroid, depression, certain medications, and infections can all cause memory and thinking problems that mimic early Alzheimer's. These causes are reversible when treated, which is why a thorough evaluation should rule them out before any dementia diagnosis is accepted as final.
Are the new Alzheimer's drugs a cure? ▼
No. Lecanemab and donanemab clear amyloid from the brain and slow cognitive decline in early Alzheimer's, but they do not reverse the disease or stop it. They carry a risk of brain swelling and small bleeds, require regular MRI monitoring, and only work in the early stage. That is one reason early diagnosis matters: the treatment options shrink as the disease advances.
How is Alzheimer's diagnosed now? ▼
Diagnosis starts with a clinical history, cognitive testing, and bloodwork to rule out treatable causes. In May 2025 the FDA cleared the first blood test for Alzheimer's, which measures a protein ratio and agrees with brain PET scans more than 90% of the time in symptomatic adults 55 and older. Spinal fluid tests and PET scans remain options when the blood result is unclear.
What should I do if a doctor says my parent's memory loss is just aging? ▼
Ask for a formal cognitive evaluation and bloodwork to rule out treatable causes, and request a referral to a neurologist or memory clinic if concerns continue. Black patients are underdiagnosed at more than twice the rate of timely diagnosis, so a single reassurance is not enough. Bring a written timeline of the changes you have seen, and consider finding a clinician who takes the concern seriously.
