I think a lot of this issue centers around being a woman and how men treat women generally. Women are expected to be a certain weight and are rarely the chummy fat guy who is just funny and OK. Men have a relationship of teasing one another that is exclusive to them, women would never say the things to heavy men that they are willing to say to women. We are looked at as much for of an object that should be looked at [is sexual], that is why so many young women are anorexic, bulemic and as of late having breast surgery.
It is something that is reprehensible and should be studied as the dual issue that it is-sex and weight or more appropriately the intersection of sex and weight .
This is not something we choose to percieve and it is incredibly naive to say we have a choice of how we allow others to view us, redhead. As to our choice of what we eat, yes we have complete control over that, but for us to choose how men percieve to view women as objects to be desired or scorned is completely involuntary and a form of abuse.