It happens when a blood clot blocks an artery supplying blood to the brain. A major challenge is that stroke risk is different for every person. The team has developed an artery-on-a-chip that creates a ‘physical twin’ of a patient’s artery. Some arteries created swirling or disturbed blood flow, making clots more likely to form and break away. If you care about stroke, please read studies about how to eat to prevent stroke, and diets high in flavonoids could help reduce stroke risk.