A carefully structured combination of a low-calorie diet and regular exercise may offer a powerful, transformative pathway to put type 2 diabetes into remission in younger adults. According to the findings of a new clinical trial, more than half of the participants who followed an intensive lifestyle program successfully achieved remission within just six months. This striking outcome stands in sharp contrast to the mere 4% of participants who achieved the same milestone while receiving standard medical care.
The groundbreaking findings were presented at the Annual Meeting of the European Association for the Study of Diabetes (EASD) and subsequently published in The Lancet Regional Health Americas. They suggest that pairing a low-calorie diet with structured, regular physical activity could fundamentally alter the clinical course of early-onset type 2 diabetes, clinically defined as a diagnosis occurring in individuals under the age of 45.
The international research effort was spearheaded by Professor Kaberi Dasgupta, Director of the Division of General Internal Medicine at McGill University in Montreal, Canada, alongside Professor Thomas Yates of the University of Leicester in the United Kingdom, and their esteemed colleagues across multiple academic and medical research centers.
Why Early-Onset Type 2 Diabetes Is Especially Dangerous
Type 2 diabetes diagnosed at a younger age is increasingly recognized by the medical community as a particularly aggressive form of the disease. Individuals diagnosed with early-onset type 2 diabetes often experience a much faster and more aggressive decline in blood sugar control over time. Furthermore, they tend to develop debilitating long-term complications much earlier in life and face a significantly shorter overall life expectancy compared to individuals who are diagnosed at older ages.
Previous medical research has established that very low-energy diets can successfully lower blood glucose levels to a degree that allows some patients to achieve diabetes remission without relying on glucose-lowering medications. In clinical terms, diabetes remission means that a patient’s average blood sugar has fallen below the established diagnostic threshold for the disease and remains there consistently without the aid of medication. Researchers emphasize, however, that remission does not equate to a permanent, irreversible cure.
Seeking to build upon these foundational insights, researchers wanted to determine whether adding structured, supervised exercise to a low-calorie dietary regimen could make the remission approach even more powerful and effective. Beyond simply assisting with weight management and regulating blood sugar, physical activity offers a broad spectrum of physiological benefits. These include improving overall cardiovascular fitness, protecting vital muscle mass during rapid weight loss, strengthening heart function, and significantly reducing underlying insulin resistance.
To rigorously investigate this hypothesis, the research team designed a clinical trial to test whether combining a restricted-calorie diet with supervised exercise could successfully achieve diabetes remission after 24 weeks, when measured against the benchmark of standard medical care.
An Intensive Diet and Exercise Program
The randomized clinical trial was conducted across three specialized research centers located in England and Canada, specifically affiliated with the University of Leicester, McGill University in Montreal, and the University of Alberta in Edmonton. The study enrolled adult participants aged 18 to 45 who had been diagnosed with early-onset type 2 diabetes and obesity, but who were not currently utilizing insulin therapy as part of their treatment regimen.
The trial was implemented as an open-label study, meaning that both the participants and the research staff were aware of which treatment assignment each individual received. However, to maintain scientific rigor, the formal assessment of the study’s primary clinical outcomes was conducted in a blinded manner.
Under the study design, one group of participants continued to receive standard, routine medical care for their condition. The alternative group was enrolled in a rigorous, intensive lifestyle intervention program. This program combined a strictly controlled daily caloric intake of 800 to 900 calories with supervised aerobic and resistance exercise sessions conducted twice per week, supplemented by one independent exercise session performed by the participant each week during the first 12 weeks. Following this initial phase, participants transitioned into a diet specifically tailored to help them maintain their newly achieved weight loss while they continued their independent exercise routines through weeks 13 to 24.
The primary objective for the researchers was to measure the proportion of participants who achieved diabetes remission at the conclusion of the 24-week period. To officially qualify for remission, participants were required to maintain an HbA1c blood test level below 6.5%, which is equivalent to 48 mmol/mol, while having taken absolutely no glucose-lowering medication for a minimum of 12 consecutive weeks. HbA1c is a standard clinical blood test that reflects an individual’s average blood sugar levels over a period of approximately three months.
The statistical analysis encompassed every single participant assigned to both study groups. In instances where specific remission data happened to be missing, the researchers applied a conservative approach, counting those individuals as not having achieved remission. Additionally, the team analyzed secondary health indicators, including changes in cardiovascular fitness, overall body composition, and structural heart health.
What Participants Ate During the Study
At the very beginning of the intensive intervention program, participants were instructed to discontinue any medications they were taking to lower their blood sugar and blood pressure, provided they did not exhibit albuminuria, all under strict medical supervision. Albuminuria refers to the presence of a specific protein known as albumin in the urine, which can serve as an early indicator of underlying kidney damage.
The restricted dietary protocol provided participants with a precise daily energy intake of 800 to 900 calories, broken down into a macronutrient distribution of 30% protein, 50% carbohydrate, and 20% fat. Participants were strongly encouraged to consume a minimum of two liters of calorie-free fluids every day and were provided with access to a fiber-based laxative if they experienced digestive issues.
During the first two weeks of the program, all conventional meals were completely replaced with specially formulated, nutritionally complete meal-replacement products marketed under the brand name Optifast. From week three through week 12, participants maintained the exact same daily calorie limit but were given greater flexibility in their food choices, utilizing Optifast products in the United Kingdom and ProtiDiet products in Canada.
This second phase of the dietary intervention permitted one conventional meal per day, adhering to strict daily nutritional targets. These included a combined protein target of 60 to 90 grams from all sources, alongside one prescribed portion of fruit and two portions of non-starchy vegetables. Following the completion of these initial 12 weeks, participants shifted their focus toward maintaining their substantial weight loss rather than pursuing further rapid reduction.
More Than Half Achieved Type 2 Diabetes Remission
Between September 24, 2021, and June 6, 2025, the research team successfully enrolled and randomly assigned a total of 96 participants, comprising 40 individuals in the UK and 56 in Canada. The cohort included 50 people assigned to the intensive lifestyle intervention and 46 individuals receiving standard medical care. The intervention group consisted of 24 females and 26 males, while the control group included 21 females and 25 males, with an overall mean age of 38 years and an average baseline body mass index (BMI) of 35.2 kg/m².
Of the total number of individuals initially enrolled in the trial, 86 participants—representing 90% of the cohort—successfully completed all final clinical assessments.
The final results revealed a striking and profound difference between the two study groups. After 24 weeks of observation, 27 out of the 50 participants who followed the combined diet and exercise program had achieved full diabetes remission. This accounted for 54% of the entire intervention group. In stark contrast, only two out of the 46 participants who received standard medical care reached the same benchmark of remission, representing approximately 4% of the control group.
After carefully accounting for relevant statistical confounding factors, the researchers calculated that participants enrolled in the intensive lifestyle program were an astonishing 21 times more likely to achieve diabetes remission than those undergoing usual care.
Significant differences were also observed in weight loss metrics between the cohorts. Among the 47 intervention participants for whom weight data was available, average body weight plummeted from 100.7 kg down to 92.3 kg, representing an average reduction of 8.4 kg over the 24-week timeframe. Conversely, the 43 control participants with available weight data started at an average baseline weight of 103.2 kg and shed a mere 1.2 kg, finishing at an average of 102.0 kg.
Following standard statistical adjustments, the intervention group lost an average of 7.5 kg more weight than the control group. Crucially, this included an additional 6.6 kg of pure fat loss, indicating that the vast majority of the weight differential stemmed directly from a reduction in harmful body fat.
Promising Results With Manageable Side Effects
Throughout the course of the clinical trial, no severe adverse events were reported by participants in either group. However, mild to moderate side effects were notably more common among the individuals following the intensive dietary protocol.
At least one adverse event was documented in 43 of the 50 intervention participants, compared to just six of the 46 participants who received standard medical care. The vast majority of these reported issues surfaced during the initial, highly restrictive stages of the diet and included common symptoms such as constipation, headaches, dizziness, and fatigue. The researchers noted that these side effects were generally transient and resolved naturally over time.
The study authors believe these findings clearly demonstrate that a combined diet and exercise intervention can produce profound, meaningful health improvements that extend far beyond mere blood sugar regulation.
Reflecting on the outcomes, the study authors stated that their findings demonstrate the practical feasibility and remarkable efficacy of combining structured aerobic and resistance exercise with a low-energy diet in cases of early-onset type 2 diabetes. They emphasized that this approach supports the potential to deliver substantial, holistic health and well-being benefits alongside successful diabetes remission.
Furthermore, the researchers pointed out that their achieved remission rates sit comfortably at the upper end of those previously documented in medical literature for clinical trials of comparable duration. This reinforces the genuine potential of structured lifestyle interventions to support clinically meaningful remission while demonstrating for the very first time that such outcomes can be successfully attained in a multi-ethnic population suffering from early-onset type 2 diabetes through an integrated regimen.
Why Preserving Muscle During Weight Loss Matters
One of the particularly critical and innovative aspects of the clinical trial was its deliberate emphasis on protecting and preserving muscle mass during a period of rapid and substantial weight loss.
The researchers explained that the vast majority of individuals who successfully complete conventional weight loss programs eventually experience a relapse, regaining some or all of the weight they originally worked hard to lose. This dynamic is especially relevant when very low-calorie diets are utilized as a primary therapeutic tool to achieve diabetes remission.
Losing weight primarily through calorie restriction alone typically results in the reduction of both total body fat and fat-free mass, a category that includes vital skeletal muscle. Emerging medical evidence suggests that when individuals subsequently regain weight following such diets, the human body often restores proportionally more fat tissue than lean muscle tissue.
Over time, this cyclical pattern of repeated weight loss and subsequent weight regain can contribute to a gradual, cumulative reduction in overall muscle mass, thereby elevating an individual’s long-term risk of developing sarcopenia—a progressive medical condition characterized by the severe decline of muscle mass, quality, and physical strength.
To proactively counteract this physiological pitfall, the researchers incorporated targeted resistance training specifically into the most intensive phase of the weight loss program. Their encouraging results indicate that it is entirely possible to achieve substantial, rapid body fat loss while simultaneously preserving crucial muscle mass, which could render the intervention significantly more beneficial for long-term metabolic health.
The study authors highlighted that their RESET for Remission trial successfully targeted muscle tissue during the intensive weight phase via structured resistance training. Their data indicates that preserving fat-free mass and muscle is indeed achievable alongside rapid weight reduction, which may hold profound implications for long-term metabolic health, physical functioning, and the overall trajectory of the disease. They noted that these promising indications warrant further validation in longer-term studies.
A Potential New Approach to Treating Type 2 Diabetes
As type 2 diabetes continues to grow in prevalence among younger adult populations globally, these new clinical findings arrive at a critical juncture for modern healthcare.
Individuals who develop the disease earlier in their lives face decades of cumulative exposure to elevated blood glucose levels, which dramatically increases their lifetime susceptibility to severe cardiovascular disease and a myriad of secondary health complications. Discovering effective, scalable methods to achieve sustained remission early in the disease’s lifecycle could therefore yield monumental public health benefits.
The research team emphasized that their therapeutic intervention accomplished multiple clinical goals simultaneously. Beyond successfully lowering blood sugar and reducing overall body fat while safeguarding muscle, the program measurably improved muscle quality and physical performance, reinforced cardiovascular health, and generated noticeable enhancements in the self-reported well-being of the participants.
Additionally, the authors suggested that this integrated lifestyle strategy could prove to be especially valuable for individuals who are actively planning a pregnancy or who possess the potential to become pregnant, where optimal metabolic control is paramount.
Nevertheless, the researchers urged a measure of caution, noting that longer-term follow-up studies are urgently required to determine whether these impressive health benefits can be sustained over extended periods. In particular, future clinical research must establish how effectively participants can maintain their reduced weight, preserve their muscle mass, and sustain diabetes remission after transitioning away from a closely monitored clinical trial environment and back into everyday life.
In their concluding remarks, the study authors emphasized that by focusing specifically on early-onset type 2 diabetes, their trial directly addresses a rapidly growing clinical population that is typically burdened by elevated cardiovascular risks, a heavy cumulative complication burden, and poor long-term prognoses. They concluded that as the global prevalence of early-onset type 2 diabetes continues to rise, their findings highlight a clear opportunity to re-evaluate traditional treatment paradigms and support the scalable implementation of integrated dietary and exercise interventions aimed at achieving lasting remission in real-world clinical settings.
