Leptox

Intervention · INT-METFORMIN

Metformin

Metformin has strong evidence for diabetes prevention in selected high-risk adults, but it is not equivalent to modern obesity pharmacotherapy and weight effects are usually modest.

Prescription medicationBiguanide glucose-lowering medicationHigh evidence

Evidence question

What did the Diabetes Prevention Program establish in adults at high risk of type 2 diabetes?

Result / effect

Over an average 2.8 years, metformin reduced diabetes incidence by 31% versus placebo; intensive lifestyle intervention reduced it by 58%.

Evidence chain

Population

Adults with elevated glucose and high risk of developing type 2 diabetes in the Diabetes Prevention Program.

Endpoint

Incidence of type 2 diabetes; body-weight change was a related but distinct outcome.

Evidence level

High. The diabetes-prevention result comes from a large randomized trial. It should not be reframed as a comparable obesity-drug weight-loss estimate.

What this record does not establish

  • The landmark endpoint was diabetes incidence, not weight loss as a primary obesity endpoint.
  • Participants were selected for elevated diabetes risk.
  • Lifestyle intervention produced a larger incidence reduction in the same trial.

Linked study records

2002 · DPPReduction in the Incidence of Type 2 Diabetes with Lifestyle Intervention or MetforminNew England Journal of Medicine↗

Sources