A method for causing a computer to execute a process for managing health condition, the process includes: detecting a grounding timing of a leg of a quadruped and a timing of weight-shift to a rear side of the quadruped and determining whether or not the leg of the quadruped has a disease or injury, based on the detected grounding timing of the leg of the quadruped and the detected timing of a weight-shift to the rear side of the quadruped.