Tagged: caffeine
A Guangdong Oolong Extract Changed How Mice Handle Drugs
In a week-long Guangzhou mouse study, a hot-water extract of Baiyedancong oolong raised liver and gut drug enzymes and slowed a gut drug pump and the kidney's drug transporters. Scaled to a 60-kilogram (about 132-pound) adult, the high dose is the solubles of 17.1 grams of leaf a day.
Not Every Rock Tea Survives to Its Seventh Steep
The Order's Rule says the seventh steep reveals a Wuyi rock tea's finest character. A 2020 chemistry study brewed real Dahongpao fourteen times to find out for which grade that is actually still true.
The controlled oolong trials measured hours of fat-burning, not pounds
No systematic review of oolong and weight loss exists; the closest, green tea's, found its weight loss unlikely to be clinically relevant.
Light and Roasted Oolong Bring Different Chemistry to the Kettle
Brewing temperature moved caffeine significantly only in oolong in one 2025 study, and roasted and unroasted oolong draw on different aroma chemistry.
The Pot Is Not Neutral: What Six Teapot Materials Do to the Same Oolong
Researchers brewed one oolong in six vessels, zisha and zhuni clay, stainless steel, ceramic, glass, and plastic, then measured what actually left the leaf.
Same Leaf, Split Into Green and Black, Kept Almost the Same Caffeine
Catechins collapsed by more than ninety percent between the two halves. Caffeine barely moved.
Oolong and Health
What the published research on oolong tea actually measures. The trial and cohort evidence on the heart, blood sugar, weight, and bone, and how partial oxidation changes the chemistry those trials test.