A measurement system for assessing milk volume expressed from a breast, comprising: a measurement device associated with a breast or other tissue and configured to facilitate measuring changes in breast volume or milk production or consumption; and a controller wirelessly communicating with the measurement device, the controller configured to calculate one or more of changes in breast volume and milk expressed from the breast wherein the measurement device includes: a distal mount portion; a proximal mount portion; and a flexible intermediate portion formed from an elastic material that bridges the proximal and distal portions; wherein the proximal and distal portions include adhesive for affixing the measurement device to tissue, and the flexible intermediate portion lacks adhesive so that the flexible intermediate portion is capable of expansion and contraction; wherein the adhesive provides the proximal and distal portions with resistance to deformation; wherein the proximal and distal portions are formed from material including non-elastomeric and elastomeric material that is different from the elastic material forming the flexible intermediate portion and wherein the proximal and distal portions include a reinforcing structure so that the proximal and distal portions are resistant to deformation; and wherein the measurement device includes a sensor provided on the proximal portion, the sensor being configured to measure an amount of expansion and compression of the flexible intermediate portion. a measurement device associated with a breast or other tissue and configured to facilitate measuring changes in breast volume or milk production or consumption; and a controller wirelessly communicating with the measurement device, the controller configured to calculate one or more of changes in breast volume and milk expressed from the breast wherein the measurement device includes: a distal mount portion; a proximal mount portion; and a flexible intermediate portion formed from an elastic material that bridges the proximal and distal portions; wherein the proximal and distal portions include adhesive for affixing the measurement device to tissue, and the flexible intermediate portion lacks adhesive so that the flexible intermediate portion is capable of expansion and contraction; wherein the adhesive provides the proximal and distal portions with resistance to deformation; wherein the proximal and distal portions are formed from material including non-elastomeric and elastomeric material that is different from the elastic material forming the flexible intermediate portion and wherein the proximal and distal portions include a reinforcing structure so that the proximal and distal portions are resistant to deformation; and wherein the measurement device includes a sensor provided on the proximal portion, the sensor being configured to measure an amount of expansion and compression of the flexible intermediate portion. a distal mount portion; a proximal mount portion; and a flexible intermediate portion formed from an elastic material that bridges the proximal and distal portions; wherein the proximal and distal portions include adhesive for affixing the measurement device to tissue, and the flexible intermediate portion lacks adhesive so that the flexible intermediate portion is capable of expansion and contraction; wherein the adhesive provides the proximal and distal portions with resistance to deformation; wherein the proximal and distal portions are formed from material including non-elastomeric and elastomeric material that is different from the elastic material forming the flexible intermediate portion and wherein the proximal and distal portions include a reinforcing structure so that the proximal and distal portions are resistant to deformation; and wherein the measurement device includes a sensor provided on the proximal portion, the sensor being configured to measure an amount of expansion and compression of the flexible intermediate portion.