Facts about Green Tea
- 10
In 2019, researchers discovered that green tea polyphenols can inhibit the growth of oral bacteria by up to 90 percent, potentially reducing plaque formation and cavities.
- 09
Over 137 varieties of green tea exist across China, with Longjing (Dragon Well) from Hangzhou commanding prices exceeding $3,200 per kilogram for premium first-flush harvests.
- 08
A cup of green tea contains approximately 25-50 milligrams of caffeine, roughly one-quarter the amount found in coffee but enough to enhance mental focus without causing jitters.
- 07
The EGCG compound in green tea can cross the blood-brain barrier, allowing it to accumulate in brain tissue and potentially protect neurons from oxidative damage associated with neurodegenerative diseases.
- 06
Japanese green tea leaves contain fluoride at levels 100 times higher than most other plants, concentrated naturally through soil absorption during cultivation.
- 05
Steeping green tea at temperatures below 80 degrees Celsius for 2-3 minutes produces a lighter flavor and preserves more heat-sensitive nutrients than boiling water steeping methods.
- 04
During the Song Dynasty around 1000 CE, whisking powdered green tea became a ritualized practice in Japan that evolved into the formal tea ceremony performed today.
- 03
L-theanine, an amino acid unique to green tea, comprises 1-2 percent of the leaf's dry weight and produces alpha brain waves associated with relaxed alertness within 30-40 minutes of consumption.
- 02
Catechins, the powerful antioxidants in green tea, can comprise up to 30 percent of the leaf's dry weight, making it one of nature's richest sources of these polyphenolic compounds.
- 01
Approximately 3.6 billion kilograms of green tea are produced annually worldwide, with China and Japan accounting for over 80 percent of global output.