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In the world’s “blue zones”—regions like Sardinia, Italy, and Okinawa, Japan, known for their unusually high concentrations of long-lived residents—researchers have studied dietary and lifestyle habits for clues about healthy aging and longevity.
In a recent video post, longevity researcher Dan Buettner highlighted three drinks commonly consumed in the Blue Zones — and studies offer clues about how each may affect health and longevity.
No. 1: Purified water
Buettner ranked water first of his three longevity drinks.
FILTERED WATER AT SPECIFIC AGES COULD ADD MONTHS TO YOUR LIFESPAN DECADES LATER, NEW STUDY SAY
“The unquestionable best thing you can drink to live to be 100 is water,” he said. “People in blue zones drink six to seven glasses of water. You want to make sure it’s purified water. Water helps lower your blood pressure, keeps your blood flowing and keeps you hydrated.”

Research from the National Institutes of Health indicates that proper hydration helps prevent cellular breakdown, reduces the risk of chronic heart disease, and promotes healthy aging. (iStock)
Research from the National Institutes of Health has linked better hydration to healthier aging, including lower risks of chronic disease and premature death, although the researchers noted that the findings do not prove cause and effect.
Other health experts note that adequate water intake supports kidney function, helps regulate blood pressure, and maintains efficient blood circulation.

Coffee consumption has been linked to lower rates of diabetes and Parkinson’s disease. (iStock)
No. 2: Black coffee
Coffee drinking is another daily habit highlighted by Buettner, who said it is associated with lower rates of diabetes and Parkinson’s disease.
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“Drink it black, one to two cups a day, stop before noon, it will help you live longer,” he added.

Regular coffee consumption has been linked to reduced risks of type 2 diabetes and neurological disorders. (iStock)
Coffee contains antioxidants and polyphenols, plant compounds that have been studied for their potential anti-inflammatory effects. Regular coffee consumption has also been linked to lower risks of type 2 diabetes and neurological disorders.
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Limiting added sugars and heavy creams can help avoid extra calories, while consuming caffeine earlier in the day can reduce its impact on sleep.
No. 3: Red wine
People in blue zones, such as Sardinia, often consume small amounts of red wine with meals.
Buettner acknowledged that red wine’s place in a longevity diet is “controversial.”

“I’m very aware of all the negative press wine is getting lately, but it’s consumed in the blue zones and it seems to add years to life,” Buettner said. (iStock)
“I’m very aware of all the negative press wine is getting lately, but it’s consumed in the blue zones and it seems to add years to life.”
Red wine contains plant compounds such as resveratrol and flavonoids, which have been studied for their potential cardiovascular effects. However, experts are increasingly questioning whether the benefits attributed to red wine outweigh the known risks of alcohol.
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Alcohol consumption has been linked to numerous health risks, including an increased risk of at least seven types of cancer, according to the U.S. Surgeon General.
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People with underlying health conditions or those taking medications should consult a healthcare professional before making any significant dietary changes.
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