A single sweetened drink. Thirty grams of erythritol, stirred into water, consumed in about two minutes.

Thirty minutes later, the blood drawn from that same person showed erythritol levels more than a thousand times higher than before they drank it. And in every single subject tested, their platelets, the cells responsible for clotting, became measurably more reactive. Not in some. In all of them.

This is not a fringe finding from an obscure source. It is the conclusion of research published in Nature Medicine, one of the most respected journals in the world, and it deserves a clear-eyed, complete telling, the kind that does not stop at the headline.

The Research, Laid Out Plainly

In 2023, a team led by Marco Witkowski at the Cleveland Clinic published findings from three separate patient groups. The first, a discovery cohort of 1,157 people undergoing cardiac risk assessment, showed that circulating erythritol levels were associated with a person’s three-year risk for major adverse cardiovascular events, meaning death, heart attack, or stroke. That finding then had to survive being tested again, in fresh groups of people, to see if it would hold up. It did, twice.

In a US validation cohort of 2,149 patients, people in the highest quarter of erythritol levels carried 1.80 times the cardiovascular risk of those in the lowest quarter. In a separate European validation cohort of 833 patients, that risk climbed to 2.21 times. Two different patient populations, on two different continents, both pointing the same direction.

Then the researchers went further. They wanted to know not just whether erythritol was associated with cardiovascular events, but whether it could actually be causing the kind of change that leads to one. So they took blood from healthy volunteers, exposed platelets to erythritol directly, and watched what happened. The platelets became more reactive, more prone to clumping together, the exact process behind a blood clot. Then they tested it in living animals, and found erythritol enhanced thrombosis, actual clot formation, in vivo.

What One Serving Actually Does

The most striking piece of this research is not the large observational cohorts. It is the small, careful intervention study that followed them.

Eight to ten healthy volunteers were given a drink containing 30 grams of erythritol, a completely typical serving size found in many sugar-free products, consumed on an empty stomach. Thirty minutes later, their blood erythritol concentration had risen more than a thousandfold above baseline. Platelet aggregation responses increased in every single subject, across every dose and every stimulus tested. In a follow-up, head-to-head comparison, an identical 30-gram dose of ordinary sugar produced no such change in platelet reactivity at all. The effect was not simply about consuming something sweet. It was specific to erythritol itself.

Perhaps the most sobering detail: elevated erythritol levels remained detectable in the bloodstream for up to two full days after that single drink. This was not a brief spike that cleared within the hour. It lingered.

A Fair Look at the Pushback

Truth telling means telling the whole truth, including the parts that complicate a tidy conclusion. This study has real critics, and their objections deserve a place here rather than being left out.

The most substantial critique involves how the intervention drink was administered. Volunteers consumed the entire 30-gram dose within about two minutes, on an empty stomach, as a concentrated liquid. Critics have pointed out that real-world erythritol consumption typically happens differently, spread across a day, mixed into food rather than gulped as a standalone drink, which may produce a gentler rise in blood levels than the sharp spike created in the lab setting. One review also noted that plasma erythritol levels tend to run lower when the sweetener is consumed with food rather than in a water-based solution, likely because food slows how quickly the stomach empties into the small intestine.

There is also a genuinely fascinating wrinkle that complicates the story further: your body makes its own erythritol. Human cells produce erythritol naturally from glucose, through a metabolic route called the pentose phosphate pathway, and elevated natural erythritol levels are themselves already a known marker of poor blood sugar control, insulin resistance, and cardiometabolic dysfunction, entirely apart from anything a person ate or drank. That raises an honest, still-unresolved question the researchers themselves acknowledge: is dietary erythritol from a sweetener directly causing harm, or does having a body already prone to producing more erythritol on its own simply mean you are more likely to have both elevated erythritol and cardiovascular risk for a shared underlying reason? The observational cohorts cannot fully separate those two possibilities from each other, even though the intervention drink study and the direct platelet experiments make a real causal mechanism look plausible.

Where This Leaves You

Held together, the honest picture looks like this: the cause-and-effect chain, drink to blood level to platelet reactivity to clot formation, is demonstrated clearly in controlled lab and intervention settings. The observational link to actual heart attacks and strokes in real patients is real, replicated, and cannot be waved away. But the size of the effect from typical, spread-out, food-based consumption, versus a single concentrated drink on an empty stomach, is not yet fully mapped out. Both things are true at once, and neither cancels the other.

Regulatory agencies in the US and Europe still classify erythritol as generally recognized as safe, a status this research is actively pushing them to reconsider. That gap, between an official safety classification built on older evidence and a newer body of research raising a real mechanistic red flag, is exactly the kind of thing worth knowing before you decide what belongs in your kitchen.

Healing Is a Journey

Discernment does not mean panic, and it does not mean dismissal either. It means holding the whole of what is known, the impressive research and its real limitations both, and letting that fuller picture guide your next step rather than a headline alone.

Your body was never meant to be a science experiment you found out about after the fact. The information exists now. What you do with it is between you, the truth, and the wisdom to walk faithfully by both.

Continue the Journey

This article is part three of a five-part series on sweeteners and gut health. If you have not read the earlier pieces yet, start with Sweeteners and Gut Health: What Your CGM Isn’t Telling You for the full comparison, and Why I’m Done With Sucralose for the story of my own exit from that particular sweetener.

For the fuller original piece on this topic, Is Erythritol Safe: What the Research Shows is worth revisiting alongside this deeper dive into the cardiovascular data specifically.

The rest of this series, publishing weekly:

(Please note: before the publication date, you will get a 404 page. Just come back around noon on the day it is scheduled to be published.)

• Stevia and Gut Health: The Gentler Sweetener — Sep 4, 2026
• Allulose and GLP-1: The Sweetener That Lowers Blood Sugar — Sep 11, 2026

Reading list on this topic:

• Sweeteners and Gut Health: What Your CGM Isn’t Telling You
• Why I’m Done With Sucralose
• Is Erythritol Safe: What the Research Shows
• Reverse Type 2 Diabetes Naturally with Lifestyle Changes
• Making Healthier Choices Starts with Reading the Nutrition Label

If you are ready to reset your relationship with food and sweeteners entirely, The Daniel Fast 21-Day Meal Plan offers a full, structured return to whole, plant-based nourishment.

If discerning conflicting health information is a skill you want to keep sharpening, the RISE series walks alongside you as you learn to trust your own body again:

• RISE: The Beginning of Balance
• RISE: Identity & Worth, Volume 1
• RISE: Body Trust, Movement, & Mindful Strength, Volume 2

Truth held in full is always worth more than a headline held in part.

Healthy Living Picks

Choosing what belongs in your kitchen starts with knowing what the research actually says, not just what the label promises. On my Amazon Storefront, you will find the pantry staples I trust, chosen with this same standard of full, honest evidence.

As an Amazon Associate, I earn from qualifying purchases.

References

1. Witkowski, M., et al. “The artificial sweetener erythritol and cardiovascular event risk.” Nature Medicine, 29, 710-718 (2023).
2. Witkowski, M., et al. “Ingestion of the Non-Nutritive Sweetener Erythritol, but Not Glucose, Enhances Platelet Reactivity and Thrombosis Potential in Healthy Volunteers.” Arteriosclerosis, Thrombosis, and Vascular Biology (2024).
3. Lecerf, J.M., et al. “Plasma erythritol and cardiovascular risk: is there evidence for an association with dietary intake?” Frontiers in Nutrition (2023).
4. “An evaluation of the article ‘The artificial sweetener erythritol and cardiovascular event risk.'” U.S. Food and Drug Administration review memorandum.
5. Hootman, K.C., et al. “Erythritol is a pentose-phosphate pathway metabolite and associated with adiposity gain in young adults.” Proceedings of the National Academy of Sciences (2017).
6. “Elevated Erythritol: A Marker of Metabolic Dysregulation or Contributor to the Pathogenesis of Cardiometabolic Disease?” Nutrients, 15(18), 4011 (2023).