In the fandom’s early days there was a fanfic called “Bittersweet” where Pinkie Pie dies from diabetes. It used to very well known but I don’t think it’s as well known these days.
@Lupin Quill
I thought so, its just so easy for certain ponies to ignore the inevitable consequences for their actions, in truth I have to concede that nopony really cares about their heath until it starts to fail them.
Look, Pinkie I want to tell you this from a place of love, I’m not trying to be mean, but you really need better care of yourself. Surviving off sweets and inedible materials is hazardous to your health and if you won’t listen to anypony else, at least listen to yourself, the contents of that ceramic plate and exorbitant amounts of sugar are killing you as we speak. The only reason you’ve lasted this long is because of your fast metabolism and because of cartoon physics among other things.
Pinkie Pie: Look, Twilight! No more belly growl interruptions for Team Twi-Pie! [chomps and gulps down all the desserts]
She’s TOTALLY gonna go hungry within the next 2 minutes after that chow down!! That pink b&stard’s metabolism is TOO DAM fast, even in mating antechinus shrewd standards!
@Smitty1991
Applejack has a big appetite yes, but Pinkie’s is enormous…I genuinely believe that when it’s cakes or other treats there’s no limit to what she can eat.
Plus she can eat plates, cake stands, ribbons etc. without ill effect.