@Lithium
What you said, pretty much, is that an overweight elf would be lower Charisma because they are overweight, because Charisma has appearance in it. The word connecting overweight to charisma is "appearance". Your words, not mine.
If you disagree, and I'd be happy for people who disagree, then don't make the connection. Is there something in the game rules that makes this connection and wasn't related? Again, I'd be happy if there was because no, Lithium, I don't want to believe that you meant what I think you said.
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I can take a purely medical view on why this might be, but it has to do with how the human mind being is hard-wired to protect the species, and not something I was going to bring up in a thread about "why doesn't Shadowrun have any fat elves", which was more of an amuse-bouche than societal commentary.
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Also, two replies were made while I was typing this and I can't see them, so if I pick at anything that was already addressed, my apologies in advance.