Sugar substitutes have become a common part of modern diets. Many people turn to them to reduce calories, lose weight, or control blood sugar.
Among these substitutes, erythritol is one of the most widely used. It is found in many “healthy” products, including keto snacks, diet drinks, and sugar-free desserts.
Erythritol is attractive because it tastes similar to sugar but has almost no calories. It also has little effect on insulin, making it popular among people with diabetes. Since its approval in 2001, it has been considered a safe option and is now included in hundreds of food products.
However, a new study from the University of Colorado Boulder is raising concerns about its safety. The research, published in the Journal of Applied Physiology, suggests that erythritol may have negative effects on the cells that line blood vessels in the brain.
The study focused on understanding how erythritol might influence stroke risk. A stroke occurs when blood flow to the brain is blocked or reduced, often due to a clot. Healthy blood vessels and proper clot control are essential to prevent this.
In laboratory experiments, researchers exposed human brain blood vessel cells to erythritol at levels similar to what might be found in a single serving of a sugar-free drink. They then observed how the cells responded.
The results showed several changes that could increase stroke risk. The cells produced less nitric oxide, which helps keep blood vessels relaxed and open. At the same time, they produced more endothelin-1, a substance that causes blood vessels to narrow.
This shift makes it harder for blood to flow smoothly. In addition, the cells showed a reduced ability to break down blood clots. Normally, the body uses natural compounds to dissolve clots and maintain healthy circulation. When this process is weakened, clots are more likely to persist and cause problems.
The researchers also found an increase in harmful molecules called free radicals. These molecules can damage cells and contribute to inflammation, which is linked to many chronic diseases.
These findings are important because they provide a possible explanation for earlier studies. Large population studies have already shown that people with higher levels of erythritol in their blood are more likely to experience heart attacks or strokes. This new research helps explain how that might happen.
However, it is important to interpret the results carefully. The study was conducted in a laboratory setting using cells, not in living people. This means the findings cannot directly prove that erythritol causes strokes.
From a critical perspective, the study offers valuable insight into potential risks but also has limitations. It looks at short-term exposure and does not consider long-term dietary patterns. Human bodies have many systems that interact in complex ways, which cannot be fully replicated in a lab.
Even so, the research raises enough concern to suggest caution. Many people consume erythritol regularly, often in multiple products each day. This could lead to higher exposure than what was tested in the study.
The findings also highlight a broader issue. Foods labeled as “sugar-free” or “healthy” are not always risk-free. Replacing sugar with artificial or alternative sweeteners may solve one problem but create another.
In conclusion, while erythritol remains widely used and generally considered safe, this study suggests that its effects on the body may be more complex than previously thought. Consumers may benefit from paying closer attention to food labels and considering moderation when using sugar substitutes.
If you care about stroke, please read studies about how to eat to prevent stroke, and diets high in flavonoids could help reduce stroke risk.
For more health information, please see recent studies about how Mediterranean diet could protect your brain health, and wild blueberries can benefit your heart and brain.
Source: University of Colorado Boulder.
