ALL LIFESTYLE
Does coffee actually lower risk of dementia?
International Coffee Day has just passed, and you might have just finished celebrating it with three different coffee flavors that day. If your morning does not properly begin until you’ve had your cup of coffee, here is a piece of research you might enjoy reading with your next cup: studies have found that coffee drinkers may have a lower risk of developing dementia.
Hold up, though. Before you start prescribing an extra-large latte as a neurological intervention, there is an important catch.
People who drink coffee may have a lower risk of dementia for several reasons, and researchers are still working out how much of that relationship can actually be attributed to coffee itself. It’s important to note that the research shows an association.
Still, the connection is interesting enough to take a closer look at, especially since dementia is becoming an increasingly important public health concern.
DATEOctober 13, 2026
AUTHORANGELA CLARE AGPAWA
READ5 Min
What research says on the effect of coffee in reducing dementia
A 2026 study published in the JAMA Network examined coffee and tea intake in relation to dementia risk and cognitive function. It found that greater consumption of caffeinated coffee and tea was associated with a lower risk of dementia, along with modestly better cognitive function. The association was strongest at moderate intake levels.
Most of the evidence comes from observational studies. Researchers can follow people's coffee habits and track who eventually develops dementia, but they generally cannot randomly assign thousands of people to drink coffee for decades and then compare the results. Moreover, personal activities, lifestyle factors, progressing health records, and other probable triggers are not monitored. This makes it difficult to say that coffee caused the lower dementia risk.
A 2024 systematic review and meta-analysis likewise found a nonlinear relationship between coffee consumption and dementia risk, while a prospective study published in Alzheimer's & Dementia reported that higher coffee consumption was associated with lower dementia risk. All of these studies show that there is a pattern, and that coffee is not vaccine in a mug.
How does coffee affect the brain?
Caffeine acts on adenosine receptors in the brain. Simply put, it helps promote alertness and reduce feelings of tiredness. Researchers have also investigated its potential effects on inflammation, oxidative stress, and other processes involved in brain health.However, not everything is to be credited to caffeine. Coffee contains bioactive compounds such as chlorogenic acids and other antioxidants, which have biological effects of their own—including neuroprotection. This is one reason researchers cannot simply assume that caffeine alone explains the association between coffee and dementia.
There is also research looking specifically at caffeine and Alzheimer's disease. A 2025 systematic review reported an association between higher caffeine intake and reduced risk of cognitive decline and Alzheimer's disease progression, although the researchers were still dealing with the limitations of the existing evidence.
How much coffee does it take to lower risk of dementia?
As implied by the mentioned studies, there is no universally established “dementia prevention dose” of coffee.In a 2023 meta-analysis, it was found that consuming around 2.5 cups of coffee per day was associated with the lowest Alzheimer's disease risk. Another meta-analysis found that moderate consumption of around one to four cups daily was associated with lower Alzheimer's risk, while consumption above four cups did not show the same benefit and may potentially be associated with increased risk.
These figures should not be interpreted as a prescription to start drinking exactly 2.5 cups every day. There is a lot of variation in coffee strength, serving size, caffeine content, preparation method, and individual tolerance, and they can all differ considerably.
Most importantly, more coffee does not equate to better. Some of the research suggests a nonlinear relationship, which means that the association does not improve simply because there is an additional cup.
Dementia in the Philippines
This conversation is not particularly abstract for Filipino families.In September 2025, the Department of Health said around 1 million Filipinos were living with dementia, with about 10% of older Filipinos estimated to be affected. The agency also emphasized that dementia involves more than forgetfulness and can include changes in thinking, speech, mood, and personality.
To reduce the risk of dementia, the DOH recommends maintaining a balanced diet, managing conditions such as diabetes and hypertension, staying mentally active, and maintaining social interaction as part of supporting brain health. This recommendation is much more potent than relying on coffee.
Related: Low-Effort Healthy Lifestyle Tips
The current evidence gives regular coffee drinkers a reasonably pleasant reason not to feel guilty about their morning ritual. Moderate coffee consumption has repeatedly been associated with a lower risk of dementia and Alzheimer's disease in observational research, and newer studies continue to investigate the relationship.
But “associated with lower risk” is not the same thing as “prevents dementia.”
The coffee may be part of a healthy lifestyle, but it cannot substitute for managing blood pressure, staying physically active, eating well, sleeping adequately, keeping socially connected, or addressing other known risk factors.
