Upgrade the Grains Study: Increasing Whole Grain Consumption in Low-income Children With Obesity

RUN-IN PHASE (Weeks -4 to 0) * Participants will participate in a "run-in phase" where they will be asked to keep all grocery receipts for a 4 week period RANDOMIZATION (Week 0) * Child participants with caregivers who are able to successfully complete the run-in phase are then randomized at that point to be either in the intervention arm or the control arm. * Patients will be block randomized by age group (8-11 and 12-16). ACTIVE PHASE (Weeks 0-12) * Participants will be given education about whole grains and whole grain preparation. Intervention and control participant activities described elsewhere. RETURN VISIT (Week 24) * 12 weeks after the completion of the active phase of the study, patients will be asked to return for a final visit at the research center, during which they will also have blood tests and other study activities repeated for one final time.