Patient description: A 67-year-old healthy woman came to the clinic to have her flu shot in early October. She works at a rehab center and has no underlying disease. It is her first vaccination this year. she is menopausal and has 4 children. She does not some. She takes daily multivitamins and anti-hypertensive drugs. She exercises regularly for 30 minutes a day at least 5 days a week. She has no allergies to any food or drugs.

Clinical trial eligibility criteria: eligible ages (years): 18.0-80.0,  Colorectal Adenoma Colorectal Cancer Endoscopic Surgery Eicosapentaenoic Acid Gastrointestinal Microbiome Participants must meet the following on screening examination to be eligible to participate in the study Underwent screening or surveillance colonoscopy with removal of at least one adenoma Age 18-80 years This study will only adult participants because colorectal carcinogenesis in children is more likely to be related to a cancer predisposition syndrome with distinct biological mechanisms compared with sporadic colorectal cancer in adults. Patients over age 80 will not be enrolled since the benefits and risks of AMR101 over the age of 80 have not yet been well-characterized ECOG performance status ≤2 (Karnofsky ≥60%, see Appendix A) The effects of AMR101 on the developing human fetus are unknown. For this reason, women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while she is participating in this study, she should inform her treating physician immediately Subjects must be able and willing to follow study procedures and instructions Ability to understand and the willingness to sign a written informed consent document  Participants who exhibit any of the following conditions at screening will not be eligible for admission into the study Currently using or have used any fish oil supplement at any dose more than once per week within the last month Regularly consuming more than three servings of fish per week History of allergic reactions attributed to fish or compounds of similar chemical or biologic composition to omega-3 fatty acid Diagnosis of inflammatory bowel disease, liver or kidney disease, bleeding diathesis Any prior diagnosis of gastrointestinal cancer (including esophageal, small intestine, colon, pancreatic), or any diagnosis of other cancers (with the exception of nonmelanoma skin) in which there has been any active treatment within the last three years Known diagnosis of Familial Adenomatous Polyposis (FAP) or Hereditary Non-Polyposis Colorectal Cancer (HNPCC, Lynch Syndrome) Any adenoma that was not completely removed during previous colonoscopy Known bleeding tendency/condition (e.g. von Willebrand disease) or history of peptic ulcer or gastrointestinal bleed, endoscopic complications, or contraindication to colonoscopy Current use of anticoagulant therapies, including Heparin, Warfarin, Dalteparin sodium,Bivalirudin, Argatroban, Lepirudin, Heparin Sodium, Heparin/Dextrose, and an unwillingness or inability to discontinue anticoagulants