The term Blue Zone was coined by Dan Buettner, a longevity expert, journalist, and author of Blue Zone Kitchen, and refers to the region where people live the longest. The five regions are Okinawa, Japan; Sardinia, Italy; Nicoya, Costa Rica; Ikaria, Greece; and Loma Linda, California. People living in these parts of the earth have some common lifestyle characteristics that seem to help them live longer. For example, RDN’s Samantha Cassetty explains, “People in the blue zone often walk and move during the day, instead of staying in the gym for an hour and then spending the rest of the time at work, in the car, and on the sofa.” In addition, blue Citizens in the region tend to maintain routines to help them manage stress, build a sense of community and strong family relationships.

Cassetty says eating habits are also a key commonality. “The residents of the blue zone mainly eat plant-based diets. They eat until they are satisfied, rather than full or full. Over time, they also tend to eat less,” she explained. Surprisingly, regular (although moderate) drinking is part of this diet, as is the dependence on fresh fruits and vegetables, legumes, nuts, whole grains, and other antioxidant-rich foods. Into the tea.

"Tea is a very common drink in all blue areas," Cassetty said. "Tea derived from the camellia plant is rich in antioxidants, which can actively protect your cells from free radical damage and oxidative stress-both of which are the basis for the development of many diseases. According to our protection of tea drinkers and tea Understanding of sex compounds, it is likely to play a role in health and longevity in these areas."

An antioxidant called L-theanine is found in black tea and green tea leaves, making these types particularly beneficial to health. "L-theanine is an amino acid that may affect certain chemicals in the brain, such as serotonin and dopamine," explains Keri Gans of RDN. "It may have a calming effect on our body and increase alertness." In addition, studies have shown that L-theanine in green tea may have neuroprotective properties and may reduce the risk of dementia.

The only food source of L-theanine? Tea. That's it.

"The benefits of L-theanine are many," Cassetty agreed. "It has been shown to help improve working memory, attention and executive function, which affects the ability to organize information and complete tasks. In addition to these benefits, L-theanine can also reduce the risk of neurodegenerative diseases (such as Alzheimer’s disease).” Although you can try taking L-theanine supplements, Cassetty points out that this may actually be less effective than drinking tea. "Researchers concluded that the effect of green tea on brain health is more important than L-theanine or caffeine alone," she explained.

In addition to brain function, there are other benefits of L-theanine. On the one hand, the compound has been found to reduce the stress hormone cortisol. Cassetty said: "This hormone can be useful when you are fighting or fleeing, but it can also be released in daily stressors, such as taking into account the stress of parenting and demanding jobs." "Over time, High stress and cortisol levels increase the risk of sleep problems, mood disorders, heart disease, etc. Therefore, limiting stress can have a positive effect on your health."

Although the L-theanine found in green and black teas makes it a particularly attractive variety, research has also shown that all types of tea—including herbal varieties such as chamomile, mint tea, and rooibos— —Benefit to the body and support healthy aging. In fact, a long-term study found that regular tea drinking is associated with a longer and healthier life, partly because people who drink tea are less likely to suffer from heart disease and stroke.

Of course, when it comes to maintaining a healthy lifestyle, L-theanine and tea may not be your only savior. "You can use a variety of tools to adjust your stress. For example, working outside, taking a walk, or participating in meditation or deep breathing exercises," Cassetty said. If living longer is not a reliable excuse to stay away from a laptop, what is it?

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