As any tea drinker is aware, most types of tea, from green to black to herbal, contain various amounts of a group of chemical compounds collectively referred to as "tannins." But what does this mean?

tannins in tea

Tannins are compounds found in virtually every plant on Earth (source). They play a role in the ripening of fruit: if you have ever bitten into an unripe apple or banana and experienced a bitter taste, it's tannins you are tasting (source). Likewise, if you have ever choked on an accidental swallow of unsweetened black tea, the tannins are to blame.

While for most people, the ingestion of tannins is harmless, some sensitive individuals may experience bowel irritation, kidney irritation, or liver damage upon consumption of extremely large amounts of tannins (source).

Additionally, even in moderate amounts, tannins do possess one negative side effect: they inhibit the absorption of iron found in vegetarian foods (source). This means that anemic individuals and vegetarians may want to stick to drinking herbal and Rooibos teas with meals, while enjoying black, green, Oolong and Pu-erh teas a few hours before and after meals. 

For the vast majority of mankind, however, tannins stand to do quite a bit of good: in scientific studies, they have been found to possess antiviral properties (source). And, much more importantly, as any tea lover knows, they add a wonderful dimension to the flavor of tea.

Written by Sable Weisman
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Comments (1)

  • Will Nov 02, 2011
    Great article!

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  • anonymous 9:31 pm:
    so glad Fall is finally here
  • Will 9:20 pm:
    Nice blog post Camsy
  • Will 3:54 pm:
    Drinking chunky cherry and sitting on the beach.. Yum!
  • anonymous 9:57 pm:
    better get another pour
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    Getting ready for the Kentucky Derby!
  • AllTea 3:37 pm:
    Probably the best tea I've ever had - thx
  • Will 7:55 pm:
    You're very welcome! Very good to hear
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    Just want to say "Thank you!" Lovin' my tea
  • anonymous 2:42 pm:
    Pouring rain over here! Perfect time for some tea
  • anonymous 9:45 pm:
    I hope you eventually carry the SleekSteep in larger sizes. It is the best invention ever!

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