Type 2 & other diabetes

Blood glucose and body weight reduction for the prevention of clinical events and mortality in patients with type 2 diabetes: A meta‐analysis and meta‐regression of 44 randomized controlled trials

Diabetes Obes MetabPublished Systematic review and meta-analysis and meta-regression of randomised controlled trials

Pooled result · All-cause mortalityResult — go to the resultHazard ratio 0.93 95% CI 0.89–0.96

Authors' conclusion

Reductions in body weight and HbA1c may play a significant role in preventing the risk of major adverse cardiovascular event (MACE) events and mortality.

Study context

Population
Patients with T2D in large-scale RCTs of glucose-lowering therapies (MEDLINE, CENTRAL, EMBASE through March 31, 2025)
Participants
274,800 patients44 RCTs
Comparison
Glucose-lowering therapies vs placebo or active control
Outcome
All-cause mortality
Methodological detailsrandom-effects meta-regression, univariate and adjusted meta-regression
  • Random-effects meta-regression
  • Univariate and adjusted meta-regression

Pooled result

As reported in the abstract

Hazard ratio

0.93

95% CI 0.89–0.96

P < 0.0001

Glucose-lowering therapiesvs Placebo or active control
HR 0.93 (95% CI 0.89–0.96); P < 0.0001
Heterogeneity across drug classes
P for interaction = 0.0006

Further pooled results

All-cause mortality per 1-kg difference in body weight (univariate meta-regression)

Difference in HR of all-cause mortality per 1-kg body weight difference
3.1% (1.4% - 4.9%); p = 0.0003
  • Univariate meta-regression

All-cause mortality per 1-kg body weight reduction, adjusted for HbA1c reduction

Risk reduction in all-cause mortality per 1-kg body weight reduction
3.4% (1.8% - 5.1%; p < 0.0001)
  • Adjusted for reduction in HbA1c

All-cause mortality per 1% HbA1c reduction, irrespective of body weight reduction

Risk reduction in all-cause mortality per 1% HbA1c reduction
7.6% (0.9% - 14.8%; p = 0.0246)

Original publication

Blood glucose and body weight reduction for the prevention of clinical events and mortality in patients with type 2 diabetes: A meta‐analysis and meta‐regression of 44 randomized controlled trials. Diabetes Obes Metab. Published 25 June 2025. doi:10.1111/dom.16561

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