How Coffee Boosts Memory in Older Women, Study Finds

If you’ve ever wondered whether your daily coffee habit sharpens more than just your morning focus—especially as you age—you’re not alone. A major long-term study from France offers concrete evidence that regular caffeine intake may help older women preserve memory in their later years.

The short answer? Drinking three or more cups of coffee or tea per day appears to help older women maintain their memory test scores over two to four years—with minimal decline compared to those who drank just one cup daily.

Key Findings from the French Caffeine and Memory Study

Published in August 2023 in the US journal Neurology, the study was led by Dr. Ricci of France’s National Institute of Health and Medical Research (INSERM). Researchers gathered data from approximately 7,000 participants—both men and women—with an average age of 74. These individuals lived in three French cities: Bordeaux, Dijon, and Montpellier.

Participants reported how many cups of coffee, tea, caffeinated medications, and even Coca-Cola (with low caffeine content) they consumed daily. They also underwent a series of cognitive tests focusing on verbal memory and other mental skills at the start, then again two and four years later.

Why Caffeine May Help Female Memory More Than Male

The results revealed a significant gender difference. Women who drank three or more cups of coffee or tea per day showed almost no decline in test scores over the two- to four-year follow-up period, compared to those who had only one cup per day. This protective effect was particularly clear in verbal memory tasks—that is, recalling words and spoken information.

In contrast, no similar memory-preserving benefit was observed among men in the study. That divergence has led researchers to hypothesize that women may be more sensitive to the effects of caffeine on cognitive function.

Caffeine Intake Did Not Reduce Dementia Risk

Importantly, while regular caffeine intake helped women maintain their memory test performance during the study, it did not appear to lower their overall risk of developing dementia, including Alzheimer’s disease. Researchers noted the study’s relatively short time span might have limited their ability to detect any long-term impact on dementia onset.

The study also confirmed that caffeine intake did not significantly affect the cognitive scores of men over the same period.

Frequently Asked Questions

How many cups of coffee or tea per day helped older women maintain memory?

Women who consumed three or more cups of coffee or tea daily had significantly less decline in memory test scores over two to four years compared to those who drank only one cup per day. The benefit was especially noticeable in verbal memory tasks.

Did the study find the same memory benefit in older men?

No. The study showed no significant memory preservation effect from coffee or tea consumption among older men. Researchers believe women may be more sensitive to caffeine’s cognitive effects.

What types of drinks were included in the study’s caffeine count?

The study recorded daily intake of coffee, tea, caffeinated medications, and even low-caffeine drinks like Coca-Cola. All were counted toward total daily caffeine consumption.

Did caffeine help reduce the risk of dementia or Alzheimer’s?

No. While regular caffeine intake helped women retain memory test performance, it did not lower their risk of developing dementia, including Alzheimer’s disease. The study duration may have been too short to measure such long-term effects.

Why did verbal memory show the clearest benefit from caffeine in women?

The study specifically tested verbal memory—such as the ability to recall words—and found that women drinking three or more cups of coffee or tea maintained these skills better over time. Other cognitive areas were tested but didn’t show as strong a link.

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