Everyday Habits Improve Diabetes Control

Scientists looked at how non‑drug lifestyle changes affect blood sugar and heart health in adults with type 2 diabetes. They wanted to see if these changes could replace or supplement medication. The study focused on metabolic syndrome components such as glucose, blood pressure, and body size.

The team searched four online databases for studies published from 2005 to 2025. They included only randomized trials that compared lifestyle interventions to usual care or no intervention. Each trial had to report at least three metabolic syndrome measures. Studies using drugs, surgery, or supplements were excluded.

The analysis combined data from 42 trials involving 9,586 participants. The lifestyle interventions reduced glycated hemoglobin by 0.43 percentage points. They also lowered fasting glucose by 0.57 mmol per liter, waist circumference by 2.25 centimeters, systolic blood pressure by 1.66 mmHg, and diastolic blood pressure by 0.93 mmHg. Triglycerides and HDL cholesterol did not change significantly.

The observed benefits were modest and the studies showed considerable variation in their results. There was no clear link between the length of the intervention and the degree of improvement. Small study effects might influence the findings, so the results should be interpreted with caution. The study was registered with PROSPERO under number CRD420251073643.