Luteolin is a naturally occurring molecule known as bioflavonoid, often found in foods including parsley, artichoke leaves, celery, peppers, olive oil, rosemary, lemons, peppermint, sage, thyme, and many others. Luteolin is thought to play an important role in the human body as an antioxidant, a free radical scavenger, an agent in the prevention of inflammation, a promoter of carbohydrate metabolism, and an immune system modulator.