Latina women with prior gestational diabetes mellitus (GDM) are at elevated risk for type 2 diabetes mellitus and cardiovascular disease. Few primary prevention programs are designed for low socioeconomic status, Spanish-speaking populations. We examined the effectiveness of a Diabetes Prevention Program (DPP) translation in low-income Latinas with a history of GDM. Eighty-four Latinas, 18-45 years old with GDM in the past 3 years, underwent an 8-week peer-educator-led group intervention, with tailoring for Latino culture and recent motherhood. Lifestyle changes and diabetes and cardiovascular risk factors were assessed at study baseline, month 3 and month 6. Participants showed significant improvements in lipids, blood pressure, physical activity, dietary fat intake, and fatalistic and cultural diabetes beliefs (p<0.05). [7,8] and can modify CVD risk factors [9,10] in highrisk individuals. In the DPP, lifestyle intervention was effective in reducing diabetes risk by 50 % over 3 years [7]. A handful of community-based DPP translations have shown promising results over relatively short time frames [11,12]. However, limited efforts have been made to translate the DPP for women with a history of GDM [13,14], especially those with low socioeconomic status (SES). This represents a critically missed opportunity [15] given that a GDM diagnosis identifies individuals at a very high risk for future T2DM [1,16] and that lifestyle intervention is an effective diabetes prevention strategy for women with history of GDM [16]. Further, few community-based adaptations of the DPP have been tested in Latinos [17] who, on the whole, experience unique socioeconomic and cultural circumstances that may affect response to traditional intervention programs [18,19].The current single-group pilot study evaluated the feasibility, acceptability, and effectiveness of a group format, peer-educator-administered DPP-adapted lifestyle intervention to reduce T2DM and CVD risk among low SES Latinas with a history of GDM. Peer education models have been shown to be a cost and clinically effective approach to health