Not mean at all lah, just factually correct. At least for a majority of the commenting in public concerning Angmohs (and such). For the obesity issue, I don't really think anybody would even bother especially if the OP is 109kg only.
But I wonder another thing, being fat used to be a status symbol and in Singapore people still great you with "have you eaten yet?" so actually being fat and from the US (not sure if the OP is an Angmoh) could be seen as something even positive. Or this is already a past thing?