Did you know you can simply tell the nurse no? Unless you are having a physical or they are prescribing medicine where the dose is based on your weight, then they have to know. When I go in for something that has nothing to do with my weight I tell the nurse to note "patient refused". The first time I did it she asked kind of sarcastically if I was having a bad day, I said no, are you? Now she just says ok and doesn't bother me.