Longevity expert Dan Buettner has suggested that a certain hot beverage could be the secret to living longer. The American author and researcher on ageing believes that green tea, a staple in many diets of long-lived people, could add years to your life.
However, it’s not about having an occasional cup – consistency is key. While it might seem excessive to some, this simple switch could potentially add nearly five years to your lifespan.
He explained: “Seven is ideal but as little as three cups of green tea a day is associated with four extra years of healthy life expectancy. We don’t know why, I’d guess it’s probably to do with all the antioxidants or catechins.
“There are probably 1,500 compounds in green tea – we don’t know for sure. But, green tea has been around for a long time, and it’s consumed daily in volume by [people in] at least two Blue Zones.”
Buettner coined the term ‘Blue Zone’ to describe regions where locals have adopted lifestyle choices that significantly boost their life expectancy, such as specific villages in Japan, Greece, Italy, and Costa Rica. In a video, he further stated: “Why not drink what we’ve learnt from our ancestors who have achieved the outcomes we want – which is a long and healthy life?”
Moreover, there is plenty of research supporting the health benefits of green tea. Research from 2011 has highlighted that green tea, rich in the plant-based antioxidant catechins, can lead to a modest reduction in ‘bad’ LDL cholesterol, which is linked to a lower risk of heart disease, strokes, and heart attacks.
Further studies, including one in 2013, have shown that daily consumption of green or black tea, whether as a beverage or capsule, can help reduce cholesterol levels and blood pressure. A more recent study from 2020 also demonstrated that green tea “significantly lowered” total cholesterol (TC) and low-density lipoprotein (LDL) levels among its 3,320 participants.
The polyphenols found in green tea are believed to help slow the damaging effects of ageing on the brain, with moderate drinking associated with a notable decrease in dementia risk. A study projected for 2025 suggests that several cups a day could offer extra protection, particularly for men.
Switching to green tea isn’t as costly as you might think. Aldi offers a box of 40 Diplomat Pure Green Tea Bags for just 65p, which is less than 1p per cup if you use one teabag.
The supermarket chain also provides decaffeinated and flavoured options at the same price, including lemon and mint varieties. In addition to green tea, inhabitants of ‘Blue Zones’, regions known for longevity, consume a trio of staple beverages, with one often surprising people due to its unexpected health benefits.
A balanced diet and regular exercise are typically recommended by doctors for maintaining good health. If you’re considering introducing something new into your routine but are worried about potential side effects, it’s always wise to consult with a healthcare professional first.