A health management device includes: a signal output unit which outputs a start signal indicating a start timing when application of an exercise load on a subject is started an acetone detection unit which detects an acetone concentration in a biogas of the subject a clock unit which measures time a storage unit which stores the start signal and the acetone concentration outputted from the acetone detection unit together with the time and a display unit which displays a first transition data group of the acetone concentration outputted from the acetone detection unit before the start signal is received, and a second transition data group of the acetone concentration outputted from the acetone detection unit after the start signal is received, based on an output from the storage unit.
