Body temperature of a toilet user may be non-intrusively obtained on a regular basis using one or more non-contact optical temperature sensors having a field-of-view between a surface of a toilet bowl and a user of the toilet while the user is releasing body excrement into the toilet. An output of the non-contact optical temperature sensor is used to determine a body temperature of the user based on at least one of: a temperature of the body excrement while the body excrement is in the field-of-view of the non-contact optical temperature sensor, a temperature of a perineal area of the user while using the toilet, a temperature of the body excrement while the body excrement is detached from the body and falling toward the surface of the toilet bowl, or a combination thereof.
