Here’s a fun tangent! Bulimia comes from Greek “ravenous hunger”; the term is a literal concatenation of the words for ox (bous) + hunger (limos). So, in Greek, bou-limia is literally “ox hunger”, which is a nod to how the word is used in medicine = perpetual and insatiable appetite for food (which is precisely the “opposite” of vomiting!). So, remember, bulimia ≠ vomiting/purging (although people who are bulimic might also vomit/purge); rather, bulimia = ox hunger!
N.B., there are many ways to “purge”; the method of purge determines the observed electrolyte disturbance. A nice description of
bulimia nervosa from MeSH:
BULIMIA NERVOSA. An eating disorder that is characterized by a cycle of binge eating (
BULIMIAor bingeing) followed by inappropriate acts (purging) to avert weight gain. Purging methods often include self-induced VOMITING, use of LAXATIVES or DIURETICS, excessive exercise, and FASTING.