FFAR2 and cancer: The role of these SCFAs, their signal to gut receptors (Free fatty acid receptor 2–FFAR2, and receptor 3 expressed by enterocytes, enteroendocrine cells and mast cells) [158, 162] and their influence on appetite control and food intake [163] as well as their anti-cancer (especially for butyrate)/anti-inflammatory properties [164] have been rapidly growing areas of research.