This common spice is a mainstay of most kitchens. Delicious in sweet treats and hearty oatmeal, and a unique twist in savoury meals, cinnamon has a warm, slightly spicy taste that lends well to a variety of dishes. You might have even heard that it can help balance blood sugar in those with type 2 diabetes or ward off Alzheimer’s disease. However, the story of cinnamon is a bit more complex, and it is potentially dangerous.