Guava is often highlighted in discussions about blood sugar because it has a low glycemic index and contains fiber that slows digestion. This can help reduce sharp spikes in blood glucose after meals.
Its natural fiber content also supports satiety, meaning people may feel full longer, which can indirectly help with appetite and portion control—both important factors in blood sugar management.
Beyond the fruit, guava leaves are commonly used to make tea. Some studies suggest that compounds in the leaves may help reduce post-meal glucose spikes by slowing carbohydrate breakdown and influencing how the body uses insulin.