in at least one instance the finding of nutritional deficiencies in a dog eating scraps from the family table led to a better understanding of the ill health of the family , none of whom had diagnostic lesions of deficiency disease at the time , although they all complained of weakness , nervousness , irritability and loss of appetite-the vague and ill-defined symptoms characteristic of deficiency diseases in the early stages .
C0162429
of nutritional deficiencies
C0011156
deficiency diseases