My grandmother is having bad breath, eating disorder, nausea, weakness..wht do u think are these symptoms of?

Grandmother: You should have her evaluated. Symptoms described may be due to a zenkers diverticulum at the upper esophagus where food can get stuck causing bad breath and inability to eat well.

Needs a medical eval: These can be symptoms of a serious medical condition that is not diagnosed. I recommend your grandmother see her primary care physician for a thorough evaluation and blood work to rule out a possible serious disease.

Decrease in saliva : Possible side effects of medications that perhaps she is taking . She needs to see her doctor regarding weakness and nausea.