Sweetness is the universal sweetest taste generally experienced when eating food rich in sugar. Sweet tastes normally perceived as pleasant, but can sometimes be categorized as unpleasant depending on the intensity of sweetness. Sugars such as sucrose and high fructose corn syrup have been considered as sweet in high amounts. Other chemical substances that are considered sweet are acesulfame potassium, monosaccharides, sugars, alcohol, glucose, lactose, glycerol, starch, and lactose.

Acesulfame potassium (ACEK) is a bitter-tasting substance found naturally in animal foods and is often used to preserve food. It has been reported that ACEK is able to inhibit the ability of the immune system to respond to antigens, which may explain why it is used to prevent the onset of various types of allergies and autoimmunity. Monosaccharides (MS) are commonly used to sweeten foods. They are also found in chocolate, but their bitter taste makes it difficult for most people to eat them.

Sugar, whether refined or unrefined, is naturally a carbohydrate content. Carbohydrates are found in vegetables, fruits, grains, and legumes. Although most foods contain carbohydrates, some include complex carbohydrates such as those found in whole grains and legumes, which have a more complex carbohydrate level than simple sugars.

High sugar content foods have long been considered to be sweet stuff. People usually enjoy eating them and take pleasure in the feeling of indulging. However, in addition to being sweet in the first place, high sugar contents may also make the food seem oily. These substances can also be found in many processed foods such as chocolate. When eaten regularly, they may increase the level of insulin in the body and make it difficult for the body to digest the foods properly. These substances may lead to high levels of blood sugar and therefore cause problems with diabetics. This may also result in weight gain.

Sweet stuff can be classified into two types: primary and secondary. Most sweet stuff is classified as primary sweet stuff, because it is the main ingredient in sweet foods, while secondary sweet stuff is added after the main ingredient has already been extracted. While some fruits and vegetables contain primary sweet stuff, most sweet stuff in foods is derived from natural sources.

Many people find that sweet stuff provides a pleasant sensation when eaten. It is known to increase appetite and stimulates a feeling of satiety, making the person feel fuller longer than usual.