Recent research reveals that your daily cup of coffee offers more than just an energy boost—it may help protect against Alzheimer's and Parkinson's diseases.
“Coffee consumption appears to correlate with a reduced risk of developing Alzheimer's and Parkinson's disease,” explained the lead researcher. “We aimed to uncover why—identifying key compounds and their role in combating age-related cognitive decline.”
The team tested three coffee types: light roast, dark roast, and decaffeinated dark roast. “Caffeinated and decaffeinated dark roasts showed equal potency in initial experiments,” the researcher noted. “This suggested the protective effects aren't from caffeine.”
Further analysis identified phenylindans, compounds formed during coffee bean roasting. Uniquely among those studied, phenylindans inhibit clumping of beta-amyloid and tau proteins—hallmarks of Alzheimer's and Parkinson's. "Phenylindans serve as a double inhibitor; it was an unexpected discovery," the researcher said.
Higher roasting levels yield more phenylindans, making dark roast coffee more protective than light roast.
