<human>: How do I convince her that she doesn't need to lose weight? She won't hear it from anyone in our family (my dad is actually a doctor and her sister, a nurse, and I am not fat but not skinny either, so my words fall on deaf ears because she's always gotten on me about my weight) and complains about her joint issues as if she's only having them because excess fat is stressing them, not because of her age. I really don't know what to do and I'm worried if she keeps dieting and working out the way she is (she brags about eating a banana and a granola bar for breakfast and lunch!), she'll end up doing a lot of harm. It also causes stress on the family, with her constantly picking on not only herself, but others as well (myself DEFINITELY included). She is 5'4" and probably around 115 pounds. Help!

Could you distill the essence of the text into 1-3 sentences?
<bot>: 60 year old mother might be anorexic, I have no idea how to approach her because she won't listen.