Sister has too much of the above. She is an extremely poor eater and all she can think of she eats cheese. Would she have to give this up as basically she will live on toast and tea
What is the doctor doing about it? Too much calcium isn't necessarily caused by diet, it is more often due to something going on with the parathyroid glands.
She needs proper medical advice.
There are a few illnesses that can cause high calcium, and all of them need investigating fairly urgently. Why did she have the blood test in the first place?