Article · Health & Science
The 1987 Team That Invented GABA Tea Tested It on Blood Pressure
The tea sold today for stress relief and better sleep was tested in 1987, by the team that made it, on hypertensive rats. The blood-pressure claim for GABA-rich foods has real, if modest, human trial evidence behind it. The calm claim now on the label rests on thinner proof, and on a molecule no human study has shown reaches the brain at all.
Jul 10, 2026 →