The Role of Greek Olive Leaf Extract in Patients with Mild Alzheimer's Disease (the GOLDEN Study): A Randomized Controlled Clinical Trial.

: Olive leaves are a significant source of biophenols, which have a beneficial impact on cognitive performance. : To examine, for the first time, in humans the effect of the daily consumption of a beverage containing olive leaf extract (OLE) versus a Mediterranean diet (MeDi) on patients diagnosed with mild Alzheimer's Disease (AD), in addition to their regular treatment. : A randomized clinical trial compared OLE's effects on cognitive and functional performance in 55 mild AD patients.