A lighting system includes a light source unit; an irradiation controller that forms a first area in a space by causing the light source unit to emit first light according to a first irradiation schedule, and simultaneously with the formation of the first area, forms a second area in the space by causing the light source unit to emit second light according to a second irradiation schedule; a communicator that acquires health condition information indicating the health condition of a user; a judgment unit that judges whether the user is a first subject targeted for irradiation with the first light or a second subject targeted for irradiation with the second light, on the basis of the acquired health condition information; and a presentation unit that presents whether the user is the first subject or the second subject, on the basis of the judgment.