As stevia is 200 to 300 times sweeter than table sugar. It typically requires about 20 percent of the land and far less water to provide the same amount of sweetness as other mainstream sweeteners.

Research has shown that stevia sweeteners do not contribute calories or carbohydrates to the diet. They have also demonstrated no effect on blood glucose or insulin response. This allows people with diabetes to eat a wider variety of foods and comply with a healthful meal plan.

Another review of five randomized controlled trials compared the effects of stevia on metabolic outcomes with the effects of placebos. The study concluded that stevia showed minimal to no effects on blood glucose, insulin levels, blood pressure, and body weight.

In one of these studies, subjects with type 2 diabetes reported that stevia triggered significant reductions in blood glucose and glucagon response after a meal. Glucagon is a hormone that regulates glucose levels in the blood, and the mechanism that secretes glucagon is often faulty in people with diabetes.

Glucagon drops when blood glucose climbs. This regulates the glucose level.

There are many causes of overweight and obesity, such as physical inactivity and increased intake of energy-dense foods that are high in fat and added sugars.

The intake of added sugars has been shown to contribute an average of 16 percent of the total calories in the American diet. This has been linked to weight gainTrusted Source and reduced control of blood glucose levels.

Stevia contains no sugar and very few, if any, calories. It can be part of a well-balanced diet to help reduce energy intake without sacrificing taste.

Stevia contains many sterols and antioxidant compounds, including kaempferol.

Studies have found that kaempferol can reduce the risk of pancreatic cancer by 23 percentTrusted Source.

Certain glycosides in stevia extract have been found to dilate blood vessels. They can also increase sodium excretion and urine output.

A 2003 study showed that stevia could potentially help lower blood pressure. The study suggested that the stevia plant might have cardiotonic actions. Cardiotonic actions normalize blood pressure and regulate the heartbeat.

However, more recent studies have shown that stevia does not seem to impact blood pressure. Further research is required to confirm this benefit of stevia.

Foods and beverages containing stevia can play an important role in decreasing calories from unwanted sweeteners in the diets of children.

There are now thousands of products on the market containing naturally-sourced stevia, ranging from salad dressings to snack bars. This availability allows children to consume sweet foods and drinks without the added calories while transitioning to a lower sugar diet.

Excessive sugars and calories are linked to obesityTrusted Source and cardiovascular disease.

In 2010, the European Food Safety Committee (EFSA) reviewed existing literature to determine if there was any cause for concern regarding the potential for allergic reactions to stevia.

The reviewers concluded that “steviol glycosides are not reactive and are not metabolized to reactive compounds, therefore, it is unlikely that the steviol glycosides under evaluation should cause by themselves allergic reactions when consumed in foods.”

Even the highly purified forms of stevia extract are highly unlikely to cause an allergic reaction. No cases of allergic reactionTrusted Source to stevia have been recorded since 2008.