My mom just turned 79 and has thyroidism but I am not sure if hyper or hypo. She is borderline diabetic and has high blood pressure. For the last year or so I have noticed what appear to be signs of depression and just... giving up. She doesn't eat because she says she doesn't feel like it or that she is hungry but doesn't feel like chewing. She gets very dehydrated, weak and lethargic at times. Will giving her vitamin B12 shots or pills help? I am also thinking of putting her on ensure at least twice a day to get at least some nourishment ... please help... I don't want to lose her.