Cinnamon is a spice, sprinkled on toast and lattes. But extracts from the bark as well as leaves, flowers, fruits, and roots of the cinnamon tree have also been used in traditional medicine around the world for thousands of years. It’s used in cooking and baking, and added to many foods. One of the most important active ingredients in cinnamon is cinnamaldehyde. It’s used in flavorings and fragrances. It may be responsible for some of cinnamon’s possible health benefits.
Some research shows cinnamon may be good for people with diabetes. A review of 18 studies suggests that cinnamon might lower blood sugar. But it didn’t affect hemoglobin A1C, which is an indicator of blood sugar levels over a long period. It may also lower cholesterol in people with diabetes. Many of the studies don’t indicate what type of cinnamon was used or have other problems that make their findings uncertain. One review suggests that cinnamon might help with obesity and weight loss. It’s sometimes used for irritable bowel syndrome or other stomach or intestinal problems.