TNF and type 2 diabetes mellitus: Disease-linked inflammation, which is the essence that links UC, CRC and T2DM resulting in up-regulation of cytokines along with transforming growth factor beta (TGFβ), tumor necrosis factor alpha (TNFα), nuclear factor kappa-light-chain-enhancer of activated B cells (NFKB), reactive oxygen species (ROS) and other signaling molecules, consequently leading to imbalance in intestinal microbiota which contributes to the inevitable progression to neoplasia [28, 29].