Dementia is the syndrome. Alzheimer's is its most common cause.
The two terms are often used interchangeably, but they do not mean the same thing. Understanding the difference makes the rest of brain health information much easier to interpret, including the part you can act on.
A set of symptoms, not a single disease.
Dementia describes a set of symptoms, including decline in memory, reasoning, language, or judgment that is significant enough to affect daily life. Alzheimer's disease is one specific cause. Everyone with Alzheimer's dementia has dementia, but not everyone with dementia has Alzheimer's disease.
Reading about a parent's diagnosis, you can still ask something useful about yourself: where your blood pressure, lipids, blood sugar, hearing, activity, and sleep stand.
What brought you here?
Three ways in, one page. Pick the one that sounds like you.
Different diagnoses need different care. The risk factors often overlap.
Different diagnoses require different medical care. Risk reduction is more overlapping: cardiovascular health, blood sugar, hearing, movement, sleep, and other whole-body factors matter across several types.
See everything we test ↗Start with the factors you can still change.
BetterBrain focuses on the earlier window, before any diagnosis, when the goal is to understand risk and improve what is still modifiable.
Blueprint gives you a cognitive baseline plus 50+ biomarkers, including the vascular and metabolic markers that matter across several dementia types.
Vascular health matters directly for vascular dementia and also appears to influence Alzheimer's risk. Blood pressure, lipids, and blood sugar belong in the picture.
Cardiovascular health, blood sugar, hearing, movement, and sleep matter across several types. A Brain Health Coach helps identify which risk factors deserve attention first.
Healthy blood vessels matter to every brain.
Dementia may feel like a purely neurological topic, but some of the most common opportunities BetterBrain sees are cardiovascular and metabolic. The ApoB figure is BetterBrain client data, not a prevalence estimate for the general public.
See what BetterBrain tests ↗Know which term you are reading.
The two terms are often used interchangeably. A headline about Alzheimer's and a headline about dementia are not always about the same thing.
Dementia describes the symptoms. Alzheimer's is one disease that can cause them, alongside vascular, Lewy body, and frontotemporal dementia. BetterBrain focuses on the earlier window: a cognitive baseline plus 50+ biomarkers, and a Brain Health Coach who helps identify which risk factors deserve attention first.
Information is one input. The plan is the product.
BetterBrain does not hand you a number and wish you luck. Every result is read inside a system built to explain what it means for you, and where you can take meaningful action.
There is more to brain health than one diagnosis.
Up to 45% of dementia cases are potentially preventable, according to the 2024 Lancet Commission, which identified 14 modifiable risk factors across life. The useful question is where your own margin lies.
Review the evidence ↗Clear answers, without false certainty.
What is the difference between dementia and Alzheimer's?
Dementia is an umbrella term for cognitive decline that interferes with daily life. Alzheimer's is a specific disease and the most common cause of dementia.
How common is dementia?
Tens of millions of people worldwide live with dementia. Risk rises sharply with age, but dementia is not a normal or inevitable part of aging.
What is the difference between vascular dementia and Alzheimer's?
Alzheimer's is defined by characteristic amyloid and tau pathology. Vascular dementia results from damage to the brain's blood supply. Mixed cases are common.
Is dementia a normal part of aging?
No. Normal aging can include slower recall or occasional forgetfulness. Dementia involves a level of decline that interferes with everyday function.
Whatever the label, the factors you can change are worth knowing.
Blueprint gives you a cognitive baseline plus 50+ biomarkers, then a Brain Health Coach helps you see which risk factors deserve attention first, in a personalized action plan, ranked by impact.