Obesity promotes worse outcome for post-menopausal breast cancer patients.

Inclusion Criteria:

• At least 18 years of age
• Post-menopausal as confirmed by medical history
• Ability to understand the purposes and risks of the study and has signed a written informed consent form approved by the investigator's IRB/Ethics Committee

Exclusion Criteria:

• Evidence of active cancer (patients with a prior history of malignancy are encouraged to participate, but due to cytokine levels associated with malignancy there must be no evidence of disease)
• Cachexia
• Active systemic illness (infection including viral illnesses such as Hepatitis and HIV)
• Chronic use of aspirin of omega-3 free fatty acid supplementation within the last 60 days (defined as greater than or equal to 7 consecutive days)
• Known hypersensitivity to aspirin and/or omega-3 fatty acids
• Actively receiving a physician-directed regimen of aspirin and/or receiving herapeutic/prophylactic anticoagulation
• Any aspirin or omega-3 free fatty acid supplementation within the last 14 days
• Subjects who are pregnant
• History of medical noncompliance