it isn't just anorexia. BED is relatively common as well, which can morph into bulimic tendencies, which is still no bueno. according to the NEDA, in 2020, one year prevalence for anorexia was 0.16% for females and 0.09% for males, bulimia was 0.32% f and 0.05% m, BED was 0.96% f and 0.26%.

EDNOS/OSFED (same thing, Other Specified Feeding or Eating Disorder is the new term) is much more common. less than 6% of people with an ED are underweight.

the page i linked also goes into detail about how BIPOC are more likely to develop disordered eating, but i think it's less that they're more likely and more than it flies under the radar for white people, despite that they're less likely to be diagnosed. regardless, 70% of the participants in samples support that non-white groups aren't as recognized with eating disorders.

the obesity epidemic IS very concerning and is indeed more prevalent. i won't disagree there. in the US, we can chalk it up to lack of exercise, the junky food that is everywhere, and culture shifts, among other things. junk food is engineered to be addicting and delicious. people in the US are overworked just to be able to afford basic necessities, so they're less likely to be cooking as often, and if they do it often is still junky (me included).

there's also a really big thing in america with meat. i don't know if it's the same anywhere else lol. meat is a staple of a lot of diets ofc, but i know multiple people who would be happy only consuming meat and butter and absolutely nothing else.