The purpose of this study is to determine if a lifestyle modification program (GEM) that focuses on reducing after-meal blood glucose elevations can improve blood glucose control in people with type 2 diabetes. Half of the participants will continue their routine medical care, and half will receive five sessions of GEM in addition to their routine care. The two groups will be assessed using diabetes-relevant medical, behavioral and psychological measures.

Inclusion Criteria:

• Diagnosed with type 2 diabetes within the past 5 years
• Age >24 and <80 years
• HbA1c >7.0%
• Approval of primary care physician to participate

Exclusion Criteria:

• Currently using, or used within the last 3 months, medications that directly lower BG (e.g., insulin, sulfonylureas, glinides, or DPP-4 inhibitors).
• Currently using, or used within the last 3 months, thiazides at doses above HCTZ 25 mg or equivalent, or loop diuretics above furosemide 20mg or equivalent.
• Currently pregnant or contemplating pregnancy in the coming year
• Currently using, or used within the last 3 months, medications that impede weight loss (e.g., prednisone)
• Having conditions that preclude increasing physical activity, e.g. severe neuropathy, active cardiovascular disease, emphysema, osteoarthritis, stroke.
• Undergoing cancer treatment
• History of lactic acidosis
• Diagnosed with renal impairment