Inclusion Criteria:  Overweight, defined as BMI≥25 kg/m2 [31] HbA1c between 5.7-6.4% drawn within 1 year of the study start date Willingness to participate in group-based classes Able to engage in at least light physical activities such as walking.  Exclusion Criteria:  History of type 1 diabetes or type 2 diabetes Current participation in another lifestyle or behavior change program or research study Vegetarian or vegan lifestyle History of bariatric surgery Inability to read, write, or speak English Inability to provide informed consent Women who are pregnant or intend to become pregnant during the intervention period.