Daily 'fountain of youth' drink could lower dementia and diabetes risk
A Harvard study associates drinking one to two cups of tea or two to three cups of caffeinated coffee daily with a reduced risk of dementia. This risk reduction is cited as up to 18%. Other research emphasizes that diabetes can triple the risk of developing Alzheimer's.
What changed
New data provides a specific risk reduction percentage of up to 18% from the Harvard study.
Live updates
-
Harvard Study Links Caffeinated Coffee and Tea to Lower Dementia Risk
confidence 90%A Harvard study associates drinking one to two cups of tea or two to three cups of caffeinated coffee daily with a reduced risk of dementia. This risk reduction is cited as up to 18%. Other research emphasizes that diabetes can triple the risk of developing Alzheimer's.
What's confirmed:
- Drinking two to three cups of caffeinated coffee or one to two cups of tea daily is associated with up to an 18% lower risk of developing dementia.
Still unconfirmed:
- Diabetes roughly triples your Alzheimer's risk through insulin resistance and chronic blood sugar damage to the brain.
- Following five specific rules at age 40 could lower the risk of Alzheimer's disease.
-
Daily Caffeinated Coffee or Tea Linked to Lower Dementia Risk
confidence 90%A 2026 study suggests that consuming two to three cups of caffeinated coffee or one to two cups of caffeinated tea daily is linked to better cognitive health. The research indicates these habits may reduce dementia risk and slow cognitive decline. However, one report notes the study cannot prove the caffeine intake is the direct cause of these benefits.
What's confirmed:
- Drinking two to three daily cups of caffeinated coffee or one to two daily cups of caffeinated tea is linked to lower risks of dementia.
- Daily coffee or caffeinated tea consumption is associated with slower cognitive decline and maintained cognitive function.
- Harvard Medical School research analyzing data from over 130,000 healthcare professionals found coffee reduces dementia risk by 18% when a certain amount is consumed daily.
Still unconfirmed:
- A daily beverage may reduce the risk of diabetes.
-
Moderate Coffee Consumption Linked to Lower Dementia and Diabetes Risk
confidence 90%Drinking two to three cups of coffee daily is associated with a reduced risk of dementia, particularly for those under 75. Research suggests caffeine protects brain cells by reducing inflammation and plaque buildup. Certain coffee preparation methods may negatively impact cholesterol levels.
What's confirmed:
- Drinking two to three cups of coffee a day is linked to a lower risk of dementia.
- Caffeine may reduce inflammation and harmful plaque buildup associated with Alzheimer's disease.
- Coffee consumption can reduce the risk of diabetes.
- Some coffee brewing methods may increase cholesterol.
Still unconfirmed:
- Caffeinated tea may slow cognitive decline.
- Tea, coffee, and kefir may support longevity by lowering inflammation and protecting against cell damage.