Celebrating 30 Years of Diabetes Prevention

This year, we're celebrating the 30th anniversary of DPP (1995-2025)! Funding for DPP was initiated in 1994 and the first participant was randomized in 1996. Over the past three decades, the DPP/DPPOS collaboration has served as a model for how large-scale clinical studies should be accomplished - as a team of researchers, health care staff, and participants, all working together, with respect for each other and the common goal of bettering the nation's health.

Study Experiences

Behind every publication and dissemination of new results are the people who made it all possible. We've asked DPP participants, staff, and family members to share with us how DPP has made a difference in their life. Here, we share their stories.

​​​​​​​If you'd like to share you story, please contact dppstories@bsc.gwu.edu.

​​​​​​​Click on each photo below to read the full story:

Maria Montez

Research Team

"It was a wonderful experience meeting so many scientists, nurses, dietitians, and biostatisticians nationwide and the long-time friendships that are still on-going!"

Jane Lehmer

Participant

“I’m just pleased to be able to make a small contribution to this larger research effort.”

Sue Shapiro

Research Team

"I have learned so much from this exceptionally loyal and dedicated group."

Drema W

Participant

"There was no research being done during my mom's time and now that there is, so many people are benefiting, lives are being extended, and there is more awareness."

Nina Peskoe Peyser

Participant

"We clearly felt that we were informing the field and our involvement would benefit the future."

Sharon Edelstein

Research Team

"When my kids were little we would go on DPP walks together and we all talked about healthy grocery shopping and meal preparation."

30 Years of Impacts

58%

The original DPP study found that lifestyle interventions reduced risk of developing diabetes by 58%.

Over 800,000 people at 2000+ sites have participated in the CDC’s National Diabetes Prevention Program and Medicare Diabetes Prevention Program.

Want to see if you are eligible to join? Click here.

DPP is the most cited paper in diabetes literature of all time, and we have published over 200 papers since.

31%

The original DPP study found that metformin reduced risk of developing diabetes by 31%

DPP has proven that lifestyle interventions to prevent diabetes are cost-saving and that metformin is cost-neutral by preventing hospital stays and reducing medical treatment needed throughout life.

To read a summary of primary findings from the DPP Research Group, read the recent highlight in the NIDDK Anniversary Collection.

Our Current Locations

DPP 30th Anniversary Collection featured in Diabetes Care

The October 2025 issue of Diabetes Care included a special collection of DPP/DPPOS papers to celebrate DPP's 30th anniversary (1995-2025). The DPPOS study cohort is perhaps the largest and longest-running study on lifestyle interventions for diabetes prevention globally. Over three decades, our study has demonstrated that diabetes can be prevented or delayed and contributed over 200 scientific articles to the literature. The special collection includes five papers representing a range of topics.