As a trained physician and chronic disease epidemiologist, I have studied the relationship between diet and lifestyle and cancers, particularly prostate cancer, breast cancer, colorectal cancer and colorectal adenoma. To gain more insight into the etiology and pathways underlying carcinogenesis, I am conducting multi-disciplinary studies to assess whether associations between risk factors and colorectal cancers differ by molecular subtypes or genetic susceptibility. Another focus of my current research is to examine the role of early-life exposures on colorectal neoplasia later in life.