Artificial sweeteners are sugar substitutes that provide a sweet taste without the calories associated with regular sugar. They are often used in food and beverages to help reduce sugar intake and manage weight. Common types of artificial sweeteners include aspartame, sucralose, and saccharin. These sweeteners are many times sweeter than sugar, meaning only a small amount is needed to achieve the desired sweetness. These sweeteners are generally considered safe for consumption by regulatory agencies like the U.S. Food and Drug Administration (FDA). However, some people may experience sensitivity or adverse reactions to certain artificial sweeteners. It's important to read labels and be aware of the ingredients in products containing these substitutes.