Disclosed is a novel aralkyl carboxylic acid compound which has an agonistic activity on GPR-120 and/or GPR-40, particularly GPR-120, and is therefore useful as an appetite regulator, an anti-obesity agent, a therapeutic agent for diabetes, a pancreatic beta differentiating cell growth enhancer, a therapeutic agent for metabolic syndrome, a therapeutic agent for a gastrointestinal disease, a therapeutic agent for a neuropathy, a therapeutic agent for a mental disorder, a therapeutic agent for a pulmonary disease, a therapeutic agent for a pituitary hormone secretion disorder or a lipid flavoring/seasoning agent. The aralkyl carboxylic acid compound is represented by the general formula (I). (I) wherein the ring Q represents a pyridyl or the like； R 1 represents a C 1-6 alkyl group or the like； R 2 represents a hydrogen atom, a C 1-4 alkyl group or a C 1-4 alkoxy group； m and n independently represent an integer of 1 to 5； and X represents an oxygen atom, a sulfur atom or - NR 3 - [wherein R 3 represents a hydrogen atom or a C 1-4 alkyl group].
