This project is a case-control study which seeks to identify modifiable risk factors for breast and colorectal cancer in Nigeria. Both cases and controls will be required to complete a risk factor questionnaire which contains information about their diet, physical activity, past medical history and life style factors. They will also be required to provide information on their body composition through the use of a bioimpedance machine which measures the body mass index, fat and total body water percentage.

Based on the existing ARGO platform where a current colorectal cancer study is going on, approximately 400 patients with a prior diagnosis or a new diagnosis will be recruited into this study. Comparatively, we will select our 400 controls from two groups of participants who are free of cancer and gastrointestinal diseases.

Case Group - Patients must have histologically confirmed diagnosis of colorectal or breast cancer.

Control Group - Patients must not have a diagnosis of cancer.

Based on the existing African Research Group for Oncology platform where a current colorectal study is going on, 400 patients with a prior diagnosis and a new diagnosis of colorectal cancer or breast cancer will be recruited into this study.

A combined total of 400 controls will be recruited from community mobilization groups and the Outpatient Health Center at OAU who are free of cancer and gastrointestinal diseases.