Black Pepper (Piperine) for Cognitive Function

Research suggests that piperine, the primary bioactive compound in black pepper, may support cognitive function and help protect against memory impairment, based on a small body of preclinical animal studies. All four available studies point in a supportive direction, with findings indicating that piperine may reduce oxidative stress, inhibit cholinesterase enzymes relevant to Alzheimer's disease, decrease neuroinflammation, and modulate signaling pathways associated with age-related cognitive decline. However, it is important to note that every study in this evidence base was conducted in rodent models, meaning the findings cannot be directly extrapolated to humans, and no randomized controlled trials or human clinical studies are represented here. The overall picture is promising but preliminary, and considerably more research, particularly well-designed human trials, would be needed before drawing firm conclusions about piperine's effects on cognitive function in people.