Stevia is a natural, zero-calorie sweetener derived from the Stevia rebaudiana plant, widely used as a healthier alternative to sugar. It offers benefits for weight management and diabetes control without raising blood glucose. Stevia is generally safe within recommended daily limits, but excessive use may cause mild side effects such as gastrointestinal discomfort or allergic reactions. Choosing purified extracts and consulting healthcare professionals can help consumers enjoy stevia's benefits safely. This article explains stevia basics, health effects, safety considerations, and compares stevia with other sweeteners.