Yoga studies report better blood sugar control alongside diabetes care. Learn what the averages mean, where results differ and how to practice safely.
An average reduction of 0.64 percentage points in HbA1c: that was the difference reported by a review combining 28 randomized controlled trials involving 2,241 adults with type 2 diabetes. HbA1c is glycated hemoglobin, a blood test used to assess blood sugar management. The review rated the certainty of the evidence as low, but its finding gives people considering yoga a concrete result to discuss at their next appointment. Yoga has been studied through laboratory measurements, as well as through how people feel during practice.[1]
Perhaps you compare the latest column on your test report with the previous one and think about the activity you managed between appointments. The research concerns adding yoga to a life that already includes diabetes treatment. Studies have also reported improvements in fasting and after-meal blood glucose. For someone returning to movement after a long break, or an adult child helping a parent consider exercise, these findings offer a reason to look beyond flexibility when weighing the value of a regular practice.[2][4]
This feature focuses on blood sugar; blood pressure and sleep are subjects for separate features. Trials exclusively involving people aged 60 and over remain limited. Research including middle-aged and older adults nevertheless provides useful information about possible benefits, the time frames studied and the practical challenge of attending regularly. The most useful connection is between what you actually practice and what your clinical tests show, with both considered alongside your ongoing treatment.[2][15][16]
Yoga can be an addition to standard diabetes care
The 2026 meta-analysis compared structured yoga programs with usual care or a waiting-list control. For this analysis, researchers pooled the blood sugar results of 28 trials involving adults with type 2 diabetes. In this review, both HbA1c and fasting blood glucose were lower in the yoga groups. That combination matters because the research did not judge yoga only by participants’ satisfaction or their impression that exercise was helping. It assessed blood sugar outcomes used in diabetes care.[1]
The average HbA1c difference was −0.64 percentage points, with a 95% credible interval from −0.87 to −0.41 percentage points. Fasting blood glucose was lower by an average of 1.36 mmol/L, with a credible interval from −1.75 to −1.00 mmol/L. The authors also reported larger benefits among participants whose blood sugar control was poorer at the beginning. These are the review’s group results, expressed in the units used by the researchers; they provide a basis for discussing yoga as part of care.[1]
The analysis accounted for relationships among multiple results obtained from the same study. It also examined whether findings varied by country, how practice was supervised or the amount of activity. No clear evidence that these conditions changed the effects emerged, although there was too little information for strong conclusions from the smaller comparisons. The authors presented yoga as a feasible addition to standard care, rather than prescribing a fixed amount of practice for everyone. That leaves room for clinical advice and for the realities of an older person’s week.[1]
An earlier synthesis points in the same direction. In 2016, researchers combined 12 randomized controlled trials with 864 participants. They reported an average HbA1c reduction of 0.47 percentage points and a fasting blood glucose reduction of 23.72 mg/dL. After-meal blood glucose was lower by 17.38 mg/dL. The results of reviews from different years therefore support considering yoga among the available activities for adults with type 2 diabetes. The size of the reported improvement differs across the collections of trials.[8]
For a reader aged over 60, the practical question is how movement fits around appointments, medication and meals. That is also the setting in which these studies place yoga: an activity added to treatment. The exercise decision and the treatment decision belong together. A class can be part of a weekly routine while the clinician continues to assess blood sugar and manage the medical side of care. The studies give that conversation a measurable subject, rather than a general promise of better health.[1][2]
The word “average” deserves attention. A pooled difference describes what researchers found when they compared groups across the included trials. It supplies a useful point of reference when choosing an activity, but an individual’s test report remains the way to assess that individual’s course. The research supports asking whether a manageable yoga routine could complement care. It does not supply a personal HbA1c target or a reason to change treatment without a consultation.[1][2]
初日の汗は、予約した人だけが持ち帰れる。
Fasting and after-meal glucose tell different parts of the story
Fasting blood glucose is measured under conditions without food, while postprandial glucose means blood glucose after a meal. A 2023 systematic review and meta-analysis considered these outcomes separately. It included 16 studies with 1,820 participants, whose ages ranged from 17 to 75. Middle-aged and older adults were therefore represented, alongside younger adults. Comparing the measurements separately helps show which aspects of blood sugar management changed in the research.[2]
Compared with a control group doing no regular exercise, the yoga group had fasting glucose lower by 31.98 mg/dL and after-meal glucose lower by 25.59 mg/dL. The HbA1c difference was 0.73 percentage points in favor of yoga. Improvements across these measurements give a broader picture than a single favorable test. They describe comparisons between groups receiving different activity programs, with oral glucose-lowering treatment forming part of the management approach.[2]
A 2025 meta-analysis narrowed its question to trials in which participants practiced yoga for three months. Fourteen randomized controlled trials, involving 1,876 people with type 2 diabetes, met its criteria. At the end of that period, fasting glucose was lower by 24.72 mg/dL, after-meal glucose by 26.01 mg/dL and HbA1c by 0.55 percentage points. Restricting the studies to the same intervention period still produced improvements in several blood sugar outcomes.[4]
Blood sugar and body weight are separate outcomes. A 2022 meta-analysis of 13 trials found improvements in HbA1c, fasting glucose and after-meal glucose, but no statistically significant change in body mass index or total cholesterol. Body mass index is a measure of body size. The interventions included yoga postures, movement, breathing and meditation. Looking at each measurement in turn allows a reader to see what improved, rather than treating every outcome as part of one overall verdict on exercise.[5]
The same 2022 review reported a significant improvement in triglycerides, a blood lipid measurement. The 2016 review of 12 trials, however, found a significant reduction in total cholesterol and no significant difference in triglycerides. Findings outside the main blood sugar outcomes therefore varied with the collection of studies. For a person who follows both glucose and lipid results at appointments, this is a reason to keep those results separate when assessing how a period of treatment and practice has gone.[5][8]
In the 2016 synthesis, total cholesterol was lower by an average of 18.50 mg/dL compared with controls. Its 95% confidence interval ran from −29.88 to −7.11 mg/dL. Breaking cholesterol down by the particles carrying it, low-density lipoprotein, or LDL, cholesterol was lower by 12.95 mg/dL, while high-density lipoprotein, or HDL, cholesterol was higher by 4.30 mg/dL. The review thus reported changes in several lipid measurements as well as in blood glucose.[8]
Triglycerides in that review were lower by an average of 12.57 mg/dL, but the difference was not statistically significant. In the 2022 review, the significant triglyceride result had a standardized effect size of −0.32, with a 95% confidence interval from −0.54 to −0.10. A standardized effect expresses the difference relative to variation in the measurements; it is not a reduction measured in mg/dL. The two reviews should therefore be read in their own terms, including the different conclusions they reached.[5][8]
The 2022 review involved people with type 2 diabetes without complications and compared yoga with usual care. Total cholesterol had a standardized difference of −0.84, without a significant effect. Body mass index had a mean difference of −0.63, also without a significant effect. The authors described short-term interventions and called for trials of longer-term effects. This is a useful distinction for anyone hoping that one exercise habit will change every number on a laboratory report.[5]
A bathroom scale cannot grade a blood sugar practice.
The 2023 synthesis also examined insulin-related measurements. Compared with the group doing no regular exercise, fasting insulin was lower by 7.19 μIU/mL, with a 95% confidence interval from −12.10 to −2.28. HOMA-IR, an index used to assess insulin resistance, was lower by 3.87; the reported interval was −8.40 to −0.66. These findings extend the discussion beyond glucose itself to measurements concerning how insulin works. They arose from research on exercise added to oral treatment.[2]
Give the practice a period you can put on a calendar
Three months is a tangible period for planning and reviewing an activity. The three-month meta-analysis measured HbA1c, fasting glucose and after-meal glucose at the end of the interventions. Its focus was on what happened after people continued a program, rather than on the feeling immediately after a session. For someone balancing exercise with diabetes appointments, this makes the evidence easier to connect with a planned period of practice and a subsequent clinical review.[4]
Frequency has also been examined. A 2022 meta-analysis gathered 28 intervention studies involving mind and body practices. Within its yoga subgroup, HbA1c was lower by an average of 1.00 percentage point, with a 95% confidence interval from −1.38 to −0.63 percentage points. An analysis comparing practice frequency across studies found that studies requiring more yoga days each week were associated with larger HbA1c reductions.[7]
The difference associated with one additional practice day per week was −0.22 percentage points in HbA1c. This was a relationship between studies, not an experiment in which each person added a day and experienced a fixed additional reduction. The authors found no significant association between weekly yoga frequency and change in fasting glucose. These two findings belong together: the frequency relationship appeared for one outcome, while the other did not show the same pattern.[7]
The review included qigong and meditation as well as yoga. Across all its mind and body interventions, the average HbA1c difference was −0.84 percentage points; the yoga-only difference was −1.00 percentage point. These figures refer to different sets of interventions. Keeping the scope attached to each number helps a reader understand which finding actually concerns yoga, and prevents an overall result from being mistaken for the result of one particular activity.[7]
For everyday planning, the relevant lesson is that research programs had periods and schedules. A plan can identify the days on which you hope to practice and a point at which you will review how it went. The evidence offers examples of those structures. It leaves the content suitable for your health and the timing of tests to discussion with your clinician and to the practice you have actually learned.[4][15][16]
Numbers: yoga and blood sugar
- In 28 randomized controlled trials involving 2,241 adults, HbA1c was lower by an average of 0.64 percentage points; evidence certainty was low.[1]
- Across 16 studies involving 1,820 participants, fasting glucose was 31.98 mg/dL lower with yoga than with no regular exercise.[2]
- In 14 three-month trials involving 1,876 participants, after-meal glucose was lower by 26.01 mg/dL.[4]
- A synthesis of 12 trials involving 864 people reported an HbA1c reduction of 0.47 percentage points.[8]
- A trial involving 81 participants with a mean age of 50.6 found no statistically significant between-group HbA1c difference.[16]
初日の汗は、予約した人だけが持ち帰れる。
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