About 15% of Americans have Type 2 diabetes. This condition develops when the body becomes insensitive to insulin, making it increasingly difficult to manage blood sugar levels.

Research published in the New England Journal of Medicine (February 7, 2002;346:393–403) showed that lifestyle change can outperform medication in preventing the onset of Type 2 diabetes.

Study Overview

The study included 3,200 adults who did not have diabetes but had:

  • Elevated blood sugar

  • An average age of 51

  • An average BMI of 34 (obese range)

Participants were assigned to one of three groups:

  1. Glucophage (metformin)

  2. Placebo

  3. Lifestyle-change program

    • Goal: 7% body weight loss

    • 150 minutes per week (~2.5 hours) of physical activity

Results After Three Years

  • The lifestyle group had a 58% lower risk of developing Type 2 diabetes than the placebo group.

  • The metformin group reduced their risk by 31% compared to placebo.

This study highlights the significant impact of diet, physical activity, and modest weight loss on preventing Type 2 diabetes—outperforming medication alone.

Educational only — not medical advice.