Study Links 2-3 Daily Coffee Cups to 35% Lower Dementia Risk Before 75
Updated
Updated · ScienceDaily · May 13
Study Links 2-3 Daily Coffee Cups to 35% Lower Dementia Risk Before 75
1 articles · Updated · ScienceDaily · May 13
131,821 U.S. health professionals tracked for up to 43 years showed the strongest benefit at 250-300 mg of caffeine a day—about two to three cups of coffee—with dementia risk 35% lower before age 75.
11,033 participants developed dementia, but the apparent protection leveled off beyond moderate intake, suggesting more caffeine did not add benefit and could undermine sleep or raise anxiety.
Researchers said caffeine may help by blocking adenosine, sustaining dopamine and acetylcholine activity, reducing inflammation, and limiting amyloid plaque buildup linked to Alzheimer's disease.
Tea also showed a protective pattern, with one to two cups a day appearing most favorable, while heavier decaf use was tied to faster memory decline—possibly because some people switched after health problems emerged.
Across 38 additional studies, caffeine drinkers had a 6%-16% lower dementia risk than non-drinkers, reinforcing the broader takeaway that moderate intake—not high consumption—looks most beneficial.
Decaf coffee is linked to memory decline, but is the drink itself the real culprit?
Does your choice of coffee bean and brew method matter for maximizing brain benefits?
If new therapies can clear brain plaques, will my morning coffee still matter for dementia prevention?
Coffee and Tea Linked to Dramatic Drop in Dementia Risk: Latest Evidence From Decades-Long U.S. Cohorts
Overview
Recent long-term studies show that moderate consumption of caffeinated beverages like coffee and tea is linked to a reduced risk of dementia and better brain function over time. Researchers analyzed data from large U.S. health studies, following participants for up to 43 years and carefully tracking their beverage intake and cognitive health. The studies used repeated dietary questionnaires and adjusted for many lifestyle and health factors. Results suggest that daily coffee or tea offers more than just an energy boost, with higher caffeinated coffee intake especially associated with lower dementia rates, highlighting the potential brain health benefits of these popular drinks.