Carnosic acid is a natural compound found primarily in the leaves of the rosemary plant. It belongs to a group of compounds known as diterpenes and is recognized for its antioxidant properties, which help protect cells from damage caused by free radicals. In addition to its antioxidant effects, carnosic acid has been studied for its potential health benefits, including anti-inflammatory and neuroprotective properties. Research suggests that it may support brain health and could play a role in preventing neurodegenerative diseases, making it a topic of interest in the field of nutraceuticals.