Espresso can prevent Alzheimer's protein clumping in lab tests

Whether enjoyed on its own or mixed into a latte, Americano or even a martini, espresso provides an ultra-concentrated jolt of caffeine to coffee lovers. But it might do more than just wake you up. Research now shows that, in preliminary in vitro laboratory tests, espresso compounds can inhibit tau protein aggregation -- a process that is believed to be involved in the onset of Alzheimer's disease.