A lighting control system includes: a biological information obtainer which obtains biological information related to a biological body of a user； an environmental information obtainer which obtains environmental information related to a surrounding environment of the user； a severity determiner which determines a severity of premenstrual syndrome (PMS) based on the biological information obtained by the biological information obtainer and the environmental information obtained by the environmental information obtainer； and a lighting controller which controls a lighting device based on the severity determined by the severity determiner.
