Not All Sugar Alternatives Are the Same
Understanding Allulose, Sugar Alcohols, Stevia & Monk Fruit
Not All Sugar Alternatives Are the Same
Understanding Allulose, Sugar Alcohols, Stevia & Monk Fruit
Sugar alternatives have become increasingly popular as more people look for ways to reduce refined sugar, manage blood glucose, and improve their eating habits.
But here's something important: Not all sugar alternatives are the same.
Some are sugar alcohols. Others are plant-derived high-intensity sweeteners. Allulose belongs to an entirely different category known as rare sugars.
These sweeteners differ in sweetness, calories, digestive tolerance, effects on blood glucose, and how they perform in cooking and baking. And some have an after taste.
Understanding those differences can help you make more informed choices.
What Are Sugar Alcohols?
Despite their name, sugar alcohols contain neither the type of alcohol found in alcoholic beverages nor ordinary table sugar.
Also called polyols, they are carbohydrates that taste sweet but are generally absorbed or metabolized differently from conventional sugar.
Common examples include:
Xylitol
Erythritol
Sorbitol
Mannitol
Maltitol
Isomalt
Lactitol
Sugar alcohols vary considerably in sweetness, calories, blood glucose effects, and digestive tolerance.
For example, xylitol is approximately as sweet as table sugar, while erythritol is somewhat less sweet. Maltitol can have a more noticeable effect on blood glucose than erythritol.
One disadvantage of sugar alcohols is that larger amounts may cause gas, bloating, abdominal discomfort, or diarrhea.
This is especially true of sorbitol, mannitol, and maltitol.
My advice: Don't assume that a product labeled sugar-free is automatically a healthier choice. Read the ingredient list and understand which sweeteners it contains.
Allulose: A Rare Sugar With Unique Properties
Allulose is one of my preferred sweeteners for cooking and baking.
It's classified as a rare sugar rather than a sugar alcohol. Small amounts occur naturally in foods such as figs and raisins.
Commercial allulose is generally produced through an enzymatic process that converts plant-derived sugars into allulose.
Allulose provides approximately 70% of the sweetness of table sugar but contributes very few usable calories.
It also has little effect on blood glucose in most people, making it an interesting alternative for those seeking to reduce their intake of conventional sugar.
Why I Like Allulose for Baking
Allulose behaves more like sugar than many other alternatives.
It can contribute to browning, moisture retention, and a pleasant texture in baked goods.
It's also particularly useful in frozen desserts because it helps reduce hardness and improve scoopability.
However, allulose browns more readily than conventional sugar, so baking temperatures and times sometimes need adjustment. Allulose can make an amazing caramel sauce!
What About Digestive Tolerance?
Allulose is generally well tolerated in moderate amounts, but larger quantities can cause digestive discomfort.
Research suggests that roughly 70% of ingested allulose is absorbed in the small intestine and subsequently excreted largely unchanged in urine. The remaining portion passes into the large intestine.
Large single doses may cause bloating, abdominal discomfort, or diarrhea.
Tolerance varies from person to person, and the amount consumed at one sitting matters.
As with any sweetener, moderation makes sense.
Xylitol: Benefits and Emerging Questions
Xylitol is a sugar alcohol found naturally in small amounts in some fruits and vegetables. It is also produced commercially, commonly from birch or other plant materials.
It provides sweetness similar to conventional sugar, with fewer calories and a smaller blood glucose response.
Xylitol has been studied extensively for its dental benefits, particularly its ability to reduce the growth of certain bacteria associated with tooth decay.
For years, it has been widely used in sugar-free chewing gum, mints, and dental products.
Xylitol and Cardiovascular Health: What Did the Research Really Show?
In 2024, a study published in the European Heart Journal raised concerns about a possible relationship between xylitol and cardiovascular risk.
Researchers examined blood samples from more than 3,300 individuals undergoing cardiovascular evaluations. These were not generally healthy populations. The median ages in the two study cohorts were approximately 63 and 65 years, and many participants had significant preexisting health conditions. Approximately 70% had hypertension, more than 75% had a history of cardiovascular disease, and roughly 22% had diabetes.
Researchers found that participants with higher circulating xylitol levels (this means the xylitol your body already produces) were more likely to experience major cardiovascular events, including heart attacks and strokes, over the following three years.
But here's an important distinction: Our bodies naturally produce xylitol.
Xylitol is formed in small amounts through normal metabolic processes, including pathways involved in glucose metabolism. Because participants had fasted before their blood samples were collected, circulating xylitol could reflect the body's own production and metabolism rather than recent dietary consumption.
This distinction matters. Researchers measured xylitol already circulating in participants' blood. They did not establish that individuals consuming more xylitol-containing foods experienced more cardiovascular events.
Could elevated xylitol levels reflect underlying metabolic changes associated with cardiovascular disease rather than being a direct cause? That remains an important unanswered question.
What About the Experiment Involving 10 Volunteers?
The researchers also conducted a separate experiment involving 10 volunteers described as healthy. Each consumed a drink containing 30 grams of xylitol.
Following consumption, researchers observed a temporary increase in circulating xylitol levels and platelet responsiveness. Platelets are blood components involved in clot formation, so increased responsiveness could potentially contribute to cardiovascular risk.
However, this small experiment did not measure heart attacks, strokes, or the long-term effects of regularly consuming xylitol. It also involved a relatively large single dose rather than the smaller amounts someone might consume occasionally in foods or dental products.
What Can We Reasonably Conclude?
These findings deserve attention, particularly the experimental evidence suggesting that xylitol may influence platelet activity.
However, association does not establish causation.
The larger observational study involved older populations with substantial existing cardiovascular risk factors. It measured circulating xylitol, which the body produces naturally, rather than directly measuring dietary consumption.
The smaller experiment demonstrated a short-term biological response but did not establish that modest dietary consumption causes cardiovascular disease.
We do not yet know whether regularly consuming small amounts of xylitol increases the risk of heart attacks or strokes.
My Perspective on Xylitol
I believe this research warrants caution, particularly for individuals with cardiovascular risk factors. However, I also believe it's important to distinguish legitimate scientific concerns from conclusions that have not yet been established. Let's not forget the many deleterious effects of sugar!
I don't recommend treating xylitol—or any sugar alternative—as something that can be consumed without limits. At the same time, the available evidence does not establish that every small amount of dietary xylitol is harmful.
My preference is to use sweeteners thoughtfully and in moderation rather than encourage frequent consumption of highly sweetened foods.
Further research is needed to better understand the effects of dosage, frequency of consumption, and long-term cardiovascular outcomes.
Important Pet Safety Warning:
Xylitol is extremely toxic to dogs and can cause life-threatening hypoglycemia and liver injury. Even small amounts may be dangerous. Keep xylitol and all foods containing it securely away from pets.
Scientific Reference
Witkowski, M., et al. (2024). Xylitol is prothrombotic and associated with cardiovascular risk. European Heart Journal, 45(27), 2439–2452.
Stevia: Sweetness From a Plant
Stevia comes from the leaves of Stevia rebaudiana, a plant native to South America.
Its sweet compounds, known as steviol glycosides, are many times sweeter than table sugar.
Highly purified steviol glycosides provide sweetness with negligible calories and generally have little effect on blood glucose.
Because stevia is so concentrated, only tiny amounts are needed.
Why Doesn't Stevia Always Taste Good?
Some people notice a bitter, licorice-like, or lingering aftertaste.
Different steviol glycosides have different flavor profiles, and commercial products vary widely in purity and concentration.
Another important consideration is that many products labeled stevia contain additional ingredients, such as erythritol, dextrose, maltodextrin, or inulin.
Always check the label.
I prefer using small amounts of stevia as part of a baking blend rather than relying on it as the only sweetener in baked goods. It shines brightest in liquids and things like cottage cheese and yogurt when used on its own.
Monk Fruit: Another Plant-Derived Sweetener
Monk fruit, also called luo han guo, is a small fruit native to southern China.
Its sweetness comes primarily from compounds called mogrosides.
Purified monk fruit extracts are intensely sweet, provide negligible calories in the amounts used, and generally have little effect on blood glucose.
Like stevia, monk fruit contributes sweetness but doesn't provide the bulk or structure that sugar supplies in baking.
Many commercial monk fruit products are blended with erythritol or other ingredients.
For this reason, I prefer a pure monk fruit extract when developing my own sweetener blends. My preferred product is NOW organic monk fruit powder available through your Fullscript account.
Why I Prefer Blending Sweeteners
No single sugar alternative performs exactly like conventional sugar in every recipe.
Allulose provides bulk, moisture retention, and browning.
Xylitol contributes sweetness closer to conventional sugar.
Stevia and monk fruit provide additional sweetness in very small quantities.
By combining sweeteners, it's possible to improve flavor and baking performance while reducing some of the aftertaste associated with using a single alternative.
This is the reasoning behind my homemade Safer Sweetener blend.
However, because the blend contains xylitol, I use it with awareness of the emerging research and the need for careful storage around pets.
My Homemade Safer Sweetener
This is the blend I use in many of my Naturally Sweet & Savory recipes in my guides.
Ingredients
3 cups (600 g) allulose
1 cup (200 g) birch-derived xylitol
1 teaspoon (5 g) pure organic monk fruit extract powder (NOW)
6 packets SweetLeaf stevia powder
Instructions
Combine all ingredients in a large bowl and whisk thoroughly until evenly distributed.
Transfer to a clean, dry, airtight container. Label and date.
This blend is designed for approximately cup-for-cup replacement of granulated sugar in many recipes, although sweetness, browning, and texture can vary.
Store securely away from pets.
What About Using Sweeteners Every Day?
Although sugar alternatives can be useful, I believe there's an even more important consideration.
We can also learn to enjoy foods that aren't intensely sweet.
If everything we eat tastes like dessert, we may never fully appreciate the natural flavors of real food.
I encourage starting the day with a savory, protein-rich breakfast rather than pastries, sweetened cereals, or desserts disguised as breakfast.
Enjoy the natural sweetness of berries, whole fruits, roasted vegetables, and other minimally processed foods.
Use alternative sweeteners when they genuinely improve a recipe, rather than assuming every food needs added sweetness.
Reducing refined sugar doesn't have to mean replacing every teaspoon with something else.
The Bottom Line
Sugar alternatives can be useful tools, but they are not interchangeable.
Some offer better baking performance. Others are more intensely sweet. Some may cause digestive discomfort, and emerging research continues to raise questions about their long-term effects.
My preference is to understand the ingredients, use them thoughtfully, and keep the foundation of our diets centered on real, minimally processed foods.
Because lifelong wellness isn't about finding unlimited ways to eat sweets.
It's about building a healthier relationship with food—and enjoying what we eat along the way.
Real food. Thoughtful choices. Lifelong wellness.
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