In a scientific review article published in Beverage Plant Research, researchers from the Chinese Academy of Agricultural Sciences have compiled findings from previous laboratory and population-based studies.
They emphasize that this type of research can identify associations but cannot prove that tea itself is the direct cause of better health.
Other factors such as diet, exercise, and lifestyle may also play a role. Therefore, the conclusions are subject to uncertainty.
Improved health
The review article indicates that green tea, in particular, is associated with a lower risk of cardiovascular disease, as well as improved regulation of blood sugar and metabolism.
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Associations are also observed with a lower incidence of diabetes and certain types of cancer.
In addition, the researchers bring together studies showing that regular tea consumption may be linked to slower cognitive decline and reduced loss of muscle strength among older adults.
Which type of tea should you drink?
According to the review, the potential health benefits primarily apply to freshly brewed tea.
Many modern tea products sold in bottles or as bubble tea contain sugar, sweeteners, and additives that may reduce or negate these effects.
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The researchers also mention findings of pesticides, heavy metals, and microplastics, which generally do not pose a risk with moderate intake but still warrant caution.
Overall, the review suggests that moderation and the choice of traditionally brewed tea are crucial.
Sources: Science Daily, and Beverage Plant Research.
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