 During surgery, biopsies of visceral and omental adipose tissue, as well as subcutaneous abdominal adipose tissue, will be obtained. Tissue will be analyzed to determine mRNA levels of key enzymes in fatty acid esterification, lipolysis, and oxidative disposition. This preliminary phase will be conducted to determine whether visceral, omental, and subcutaneous abdominal adipose tissue behave similarly when exposed to an MCT-based dietIn Phase 1 and 2, these results will be used to extrapolate effects on visceral and omental adipose tissue from effects seen on subcutaneous adipose tissue. 