What Are Sugar Alcohols? Understanding This Widely Used Sugar Substitute

As more consumers look for ways to reduce added sugar, sugar alcohols have become a widely used solution. But what are sugar alcohols, and how do they compare to other natural sugar substitutes?

This category of ingredients appears in a wide range of food products, offering sweetness with fewer calories and a different metabolic impact than traditional sugar.

In this article, we’ll take a closer look at what sugar alcohols are, how they work, where they’re used, and how they fit into the broader landscape of sugar alternatives.

What Are Sugar Alcohols?

Despite the name, sugar alcohols are neither sugar nor alcohol in the traditional sense. So, what are sugar alcohols exactly?

Sugar alcohols, also known as polyols, are a category of carbohydrates used as sugar substitutes. They provide a sweet taste with fewer calories than table sugar and a different metabolic impact. While they occur naturally in small amounts in certain fruits and vegetables, most sugar alcohols used in food products are commercially produced from carbohydrates like glucose.

It can be helpful to think of them as a middle ground between sugar and high-intensity sweeteners. They offer both sweetness and bulk—similar to sugar—but with fewer calories and a reduced effect on blood sugar levels.

How Do Sugar Alcohols Work in Food?

Sugar alcohols function differently from traditional sugar in the body and in food formulations.

Unlike sugar, which is fully digested and absorbed, sugar alcohols are only partially absorbed in the small intestine. This is what gives them their lower calorie value and reduced impact on blood glucose levels.

In food products, sugar alcohols are often used because they can:

• Provide sweetness with fewer calories

• Add bulk and texture, similar to sugar

• Help create the structure needed in baked goods and confections

This combination makes them a versatile option within the broader category of sugar substitutes.

What Are Common Types of Sugar Alcohols?

There are several types of sugar alcohols used in food, each with slightly different properties:

• Erythritol: Lower-calorie option with minimal blood sugar impact and a mild cooling effect

• Xylitol: Similar sweetness to sugar and commonly used in chewing gum and oral care products

• Sorbitol: Less sweet than sugar and often found in sugar-free candies

• Maltitol: Frequently used in chocolate and baked goods due to its sugar-like texture

• Mannitol: Less commonly used, often in specialty or pharmaceutical products

While they share a common classification, each behaves a bit differently in terms of taste, digestion, and functionality.

Why Are Sugar Alcohols Used as Sugar Substitutes?

Sugar alcohols play a key role in the development of reduced-sugar and sugar-free products.

As sugar substitutes, they offer a balance of sweetness and functionality that can be difficult to achieve with other ingredients alone. Unlike high-intensity sweeteners, which are used in very small amounts, sugar alcohols help replicate sugar’s physical properties.

They’re also commonly used because they have a lower impact on blood sugar levels compared to traditional sugar. Since they are only partially absorbed, they don’t cause the same rapid spikes in glucose—making them a frequent choice in products designed for people managing blood sugar, including those with diabetes.

They’re commonly found in:

• Sugar-free candy and chocolate

• Baked goods and dessert mixes

• Protein bars and snacks

• Chewing gum and mints

Because of their versatility, sugar alcohols are often combined with other sweeteners to improve taste and performance.

Are Sugar Alcohols Bad for You?

In general, sugar alcohols are considered safe by global food safety authorities and are widely used in food and beverage products. However, their unique digestion process can lead to some considerations.

One of the reasons sugar alcohols are widely used is their reduced impact on blood sugar levels, which can make them a helpful option for people looking to limit glucose spikes. That said, responses can vary depending on the specific type of sugar alcohol and the individual.

Key factors to keep in mind:

• Digestive sensitivity: Because sugar alcohols are not fully absorbed, they can cause bloating or discomfort in some individuals, especially in larger amounts

• Variation by type: Some, like erythritol, are typically better tolerated than others

• Blood sugar response: While lower than sugar, they are not always zero-impact and may still affect blood glucose to some degree

• Individual response: Tolerance and metabolic response can vary based on the person and overall intake

So, are sugar alcohols bad for you? For most people, they can be part of a balanced approach to reducing added sugar—particularly when consumed in moderation. For those managing conditions like diabetes, it’s best to consider overall dietary patterns and consult a healthcare professional for personalized guidance.

How Do Sugar Alcohols Compare to Other Natural Sugar Substitutes?

Sugar alcohols are just one category within a broader landscape of natural sugar substitutes. While they’re often used for their ability to provide both sweetness and structure, other alternatives take different approaches to reducing sugar.

The comparison below highlights how sugar alcohols fit alongside other commonly used options:

 One of the key distinctions is that sugar alcohols help replicate sugar’s physical properties—something many high-intensity sweeteners cannot do on their own.

Because of this, modern formulations often rely on combinations of ingredients rather than a single solution, using different sweeteners to balance taste, texture, and overall performance.

What Role Do Sugar Alcohols Play in Modern Sugar Reduction?

Sugar alcohols have become a foundational tool in reducing sugar—but they’re part of a broader shift in how sweetness is approached.

Today’s formulations rely less on a single ingredient and more on combining sugar substitutes to balance taste, texture, and nutrition. At the same time, newer technologies, including sweet proteins, are rethinking how sweetness is delivered and reducing some of the trade-offs of traditional options.

In this evolving landscape, sugar alcohols remain an important option—just one part of a more advanced, integrated approach to sweetness.

FAQs About Sugar Alcohols

1. What are sugar alcohols?
Sugar alcohols are a category of carbohydrates, also known as polyols, used as sugar substitutes. Despite the name, they are neither sugar nor alcohol in the traditional sense. They provide sweetness with fewer calories and a different metabolic impact than table sugar.

2. Are sugar alcohols bad for you?
For most people, sugar alcohols are considered safe when consumed in moderation and are widely approved by global food safety authorities. However, some individuals may experience digestive discomfort, especially with higher intake or certain types.

3. Do sugar alcohols raise blood sugar?
Sugar alcohols typically have a lower impact on blood sugar than regular sugar because they are only partially absorbed by the body. However, the effect can vary depending on the specific type and amount consumed.

4. What foods contain sugar alcohols?
Sugar alcohols are commonly found in sugar-free and reduced-sugar products such as gum, candy, chocolate, protein bars, baked goods, and some low-sugar beverages.

5. What are the most common types of sugar alcohols?
Common sugar alcohols include erythritol, xylitol, sorbitol, maltitol, and mannitol. Each varies slightly in sweetness, calorie content, and how the body digests it.