Inclusion Criteria:

- Aged 21 years and older

- Have BMI >30.0 kg/m2 and <40 kg/m2

- Willing and able to participate in clinic visits, group sessions, and telephone and
Internet communications at specified intervals

- Able to provide data through questionnaires and by telephone

- Willing to maintain contact with the investigators for 12 months

- Willing to allow blood collections

- No known allergy to tree nuts

- Able to be physically active

Exclusion Criteria:

- Diabetic

- Inability to be moderately physically active

- A history or presence of a comorbid diseases for which diet modification and
increased physical activity may be contraindicated

- Currently pregnant/breastfeeding

- Planning to become pregnant within the next year

- Currently enrolled in a weight loss program or diet intervention study

- Current use of weight loss medication or supplements

- Planned surgical procedure that can impact the conduct of the study

- Have plans to relocate from area within the next year

- 6+ months use of meds likely to cause weight gain or prevent weight loss

- Any condition which in the opinion of the investigator makes the subject unsuitable
for inclusion in this study