06/07/2026
🧠 What Causes Dementia?
One of the most common misconceptions I hear is that dementia is a disease.
It isn’t.
Dementia is actually a syndrome—a collection of symptoms caused by different diseases and conditions that damage the brain.
Alzheimer’s disease is the most common cause, but it is not the only one.
Dementia can also be caused by vascular disease (changes in blood flow to the brain), Lewy body dementia, frontotemporal dementia (FTD), Parkinson’s disease dementia, traumatic brain injuries, and sometimes a combination of several conditions called mixed dementia.
The type of dementia matters because each affects the brain differently.
Some dementias primarily affect memory.
Others affect behavior, personality, language, movement, judgment, or visual perception.
Understanding the cause helps us better understand the person.
It helps us communicate more effectively, reduce frustration, create safer environments, and provide care that honors dignity and personhood.
The good news?
While not all dementia can be prevented, many risk factors can be influenced through healthy lifestyle choices, managing blood pressure, controlling diabetes, staying physically active, protecting hearing, prioritizing sleep, remaining socially connected, and challenging the brain throughout life.
Knowledge is powerful.
The more we understand the brain, the more compassionate and effective we become as care partners.
Because dementia is the disease.
The person is still there. 💙
caregiversupport