He sometimes employed experiments to further his research, at one time repeatedly weighing a caged bird and noting its weight loss between feeding times.
Symptoms that suggest the presence of metastatic disease include weight loss, bone pain and neurological symptoms (headaches, fainting, convulsions, or limb weakness).
Sorting of produce to separate the saleable from the unsaleable can result in high percentages being discarded, and there can be high weight loss from the trimming of leafy vegetables.