A wearable article comprising a dehydration indicator adapted to measure a
urine ionic strength correlated to a specific gravity of the wearer's
urine and provide a visible signal when the urine ionic strength reaches
a value corresponding to a predetermined threshold of the specific
gravity. The wearable article may be a disposable absorbent article. The
dehydration indicator may also be comprised in an insert for use with a
wearable article. The dehydration indicator may provide qualitative or
quantitative information about the ionic strength of the wearer's urine.