According to research reviewed by Gram, online diabetes education worked about as well as in-person classes for adults with type 1 diabetes. In a 2026 pilot trial of 51 adults, average blood sugar improved by nearly identical amounts in both groups over 12 months, with a difference of only 0.07 percentage points.
Living with type 1 diabetes often means learning to manage blood sugar every day, and structured education classes can help. According to research reviewed by Gram, a small 2026 trial called OPTIM@TE compared the same diabetes education program delivered online and in person. Fifty-one adults with type 1 diabetes and higher-than-target blood sugar were randomly assigned to one format. After 12 months, average blood sugar levels improved by nearly the same amount in both groups. The online group had a slightly better Mediterranean diet score, but fewer online participants finished the program. The findings suggest online classes may be a workable option, but researchers say larger studies are needed before drawing firm conclusions.
Key Statistics
A 2026 pilot randomized controlled trial of 51 adults with type 1 diabetes found no significant difference in 12-month blood sugar control between online and in-person diabetes education, with an adjusted difference of just 0.07 percentage points.
In the same 2026 trial, 23.1% of online participants completed the diabetes education program compared with 60.0% of in-person participants, although those who finished reported high satisfaction.
The 2026 OPTIM@TE trial found that the online group improved Mediterranean diet adherence by 2.48 points more than the in-person group, the only statistically significant secondary result.
The Quick Take
- What they studied: Researchers wanted to know whether a group diabetes education program works just as well when taken online as when taken in person, using the same lessons and the same amount of class time.
- Who participated: The study included 51 adults with type 1 diabetes whose average blood sugar was above the recommended target. Each participant needed access to a smartphone, tablet, or computer. Twenty-six people were assigned to the online program and 25 to the in-person program.
- Key finding: After 12 months, blood sugar control was almost identical in both groups. The difference was 0.07 percentage points, which was too small to be considered a real difference given the number of people in the study. Only 41.2% of participants finished the full program.
- What it means for you: If you have type 1 diabetes and have trouble getting to in-person classes, an online program may be a reasonable option to discuss with your care team. Because the study was small and many people dropped out, it is wise to choose a program with support to help you finish.
The Research Details
This was a pilot randomized controlled trial, which means participants were placed into groups by chance. Chance placement helps make sure the two groups are similar at the start, so any differences that appear later are more likely caused by the program itself. The study was ‘open-label,’ meaning both the participants and the researchers knew which program each person was taking.
Everyone in the study had type 1 diabetes and a blood sugar test result (HbA1c) of 7.5% or higher, which indicates blood sugar was not well controlled. Half of the group, chosen at random, took a structured group education program online. The other half took the same program in person. Both versions used the same lessons and were designed to last at least 10 hours.
The main measure was HbA1c, a blood test that reflects average blood sugar over about three months. Researchers also tracked other measures, including continuous glucose monitor readings, body measurements, blood fats, diet habits, quality of life, and how well each program was carried out.
Comparing two versions of the same program is one of the fairest ways to test whether delivery format matters. Because the lessons, length, and goals were identical, any difference in results is more likely due to how the program was delivered rather than what was taught. Random assignment also reduces the chance that people who were more motivated ended up in only one group.
Randomization is a strength, and the researchers registered the trial publicly (ClinicalTrials.gov NCT05708820). However, this is a pilot study with only 51 people, so it is not large enough to detect small differences reliably. Because participants and researchers knew who was in which group, there is some room for bias in how outcomes were recorded or reported. The high number of dropouts also makes the results harder to interpret.
What the Results Show
The main question was whether online classes would lower HbA1c more than in-person classes after 12 months. They did not. The adjusted difference was -0.07 percentage points, with a 95% confidence interval of -0.71 to 0.57. This range includes zero, meaning the data are consistent with no difference, and also with changes in either direction that are too small to matter in everyday life. The p-value was 0.831, far above the usual cutoff of 0.05, so the difference was not statistically significant.
The researchers also looked at continuous glucose monitor readings, which track blood sugar throughout the day and night. They found no significant differences between the two groups on these measures. Other body and blood measurements, along with patient-reported outcomes such as how people felt about their diabetes care, were also similar in both groups.
The main concern was participation. Overall, only 41.2% of people completed the program. Among in-person participants, 60.0% finished, compared with only 23.1% of online participants. Even so, people who completed the program said they were highly satisfied with it. This suggests the content was well received by those who stayed with it, but keeping people engaged online is a real challenge.
The only outcome that reached statistical significance was diet quality. The online group improved more on adherence to a Mediterranean diet, which emphasizes vegetables, fruits, whole grains, olive oil, and fish, with an adjusted difference of 2.48 points (95% CI 0.71 to 4.24, p = 0.009). Because the study looked at many outcomes, this single significant result could have occurred by chance and should be treated as a hint for future research rather than a firm conclusion. Participants who completed the program reported high satisfaction, which may matter for future program design even though completion rates were low.
According to the study authors, direct comparisons of equivalent online and in-person diabetes education programs have been limited. This trial adds useful evidence by holding the curriculum and program length constant across both formats. Previous research on digital diabetes education has generally suggested that online programs can help people, but this study highlights that completion rates may be a key difference to address in future work.
The study had only 51 participants, which is too few to confidently detect small but meaningful differences. It was designed as a pilot, meaning its main purpose was to test whether the approach was workable rather than to prove that it works. Because both groups knew their program format, results could be influenced by expectations. Many participants did not finish the program, especially online, so the results may not reflect what would happen if everyone completed it. Participants also needed access to a personal digital device and were likely more engaged than the general population of adults with type 1 diabetes. The study followed people for 12 months, which is useful, but it does not show whether the results last longer.
The Bottom Line
Based on this pilot trial, online group diabetes education appears to produce blood sugar results similar to in-person education over one year. Confidence in this finding is moderate, since it comes from a small, single study that did not find a difference. Online programs should be seen as a potential option rather than a proven replacement. Anyone considering an online program may benefit from choosing one with built-in support, such as reminders, check-ins from a coach, or a way to connect with other participants, because completion was the biggest challenge in this study.
Adults with type 1 diabetes who struggle to attend in-person classes because of distance, work, childcare, or transportation may find this research especially relevant. People who already have reliable access to a digital device and enjoy learning online may be good candidates. Children, people without reliable internet or digital devices, and those who prefer face-to-face support may need different options. Healthcare teams and diabetes educators designing programs may also find the completion data useful.
In this study, researchers measured results at 12 months, which is the point at which blood sugar changes from education are typically assessed. Many people may notice changes in daily habits within the first few weeks or months of a program, but meaningful shifts in the three-month blood sugar average usually take several months to show up. Individual results will vary, and any changes should be discussed with a diabetes care team.
Frequently Asked Questions
Is online diabetes education as effective as in-person classes for type 1 diabetes?
A 2026 pilot trial of 51 adults found blood sugar control was nearly identical after 12 months, with a difference of 0.07 percentage points that was not statistically significant. The researchers noted that larger studies are needed to confirm these preliminary results.
Why do so few people finish online diabetes education programs?
In the OPTIM@TE trial, only 23.1% of online participants completed the program compared with 60.0% in person. The study did not determine the exact reasons, but it suggested that strategies to improve engagement are needed for online programs to work well.
Does a Mediterranean diet improve with online diabetes classes?
In a 2026 pilot trial, people in the online diabetes education group improved their Mediterranean diet adherence by 2.48 points more than the in-person group. This was the only statistically significant secondary result, so it should be confirmed by future studies.
How long does it take to see blood sugar benefits from diabetes education?
In the OPTIM@TE trial, blood sugar was measured at 12 months, the point at which education effects are typically assessed through the HbA1c test. Changes in daily habits may appear sooner, but the three-month blood sugar average usually takes several months to reflect them.
Want to Apply This Research?
- Track your daily time in target range using your continuous glucose monitor or meter readings, and record it weekly as a percentage. Also log how many education modules or sessions you complete each week to monitor engagement, since completion was the biggest challenge in this study.
- Set a fixed weekly time for your online diabetes lessons, such as the same evening each week, and schedule a short reminder in the app before each session. After each lesson, log one diet change you tried, such as adding vegetables to a meal or swapping a refined grain for a whole grain, to build Mediterranean-style eating habits.
- Review your progress monthly by comparing time in range, meal logs, and lesson completion over time. Share a summary with your diabetes care team every three months, and plan a formal check of your HbA1c test results about every three to four months. If your engagement drops for two or more weeks, use the app to set a small goal to restart, such as finishing one short module.
This article summarizes a small pilot clinical trial and is for general information only. It is not medical advice. Type 1 diabetes requires individualized care, so please talk with your diabetes care team before changing your insulin, diet, monitoring, or education plan. The findings may not apply to everyone, particularly people with different health conditions or without reliable digital access.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.