Salvia Hispanica Seed in Reducing Risk of Disease Recurrence in Patients With Non-Hodgkin Lymphoma

Inclusion Criteria: * Have a diagnosis of any type of NHL and =\< 5 years from the last treatment * In remission (complete remission \[CR\], partial remission \[PR\], or stable disease based on clinical, not necessarily radiologic, assessment) and currently being observed and with no current cytotoxic chemotherapy planned; patients may be on rituximab maintenance * No international travel planned during the next 4 months * Able to eat a full range of solid food and liquids and tolerate seeds/nuts * Maintain a consistent general diet without significant variation * Able to deliver four fresh (within 24 hours) stool samples to Mayo Clinic Rochester over a four month period * Eastern Cooperative Oncology Group (ECOG) performance status (PS) 0, 1, or 2 * Provide informed written consent * Able to recollect dietary intake for the prior 24 hours in order to complete a one-day food record with assistance from a dietician at each study visit * Willing to complete the food frequency questionnaire (FFQ) at baseline and at 16 week visits with assistance from a dietician * Willing to be seen at baseline, 6 weeks, 12 weeks, and 16 weeks for the study time points * Willing to provide blood and stool samples at baseline and study time points for correlative research purposes Exclusion Criteria: * Cannot eat normal table food by mouth; NOTE: patients with any form of feeding tube or a swallowing disorder are not eligible * Have taken fish oil, another dedicated n-3 supplement, or SH seed …