Responses

oh no not like that, it was literally just a miscommunication between them + social pressures resulting in the buff dude going on that diet. However to be asking "does IV, this thing that is stopping me from passing out, make me gain weight" is definitely a distorted way of thinking about calories. As a person who has experienced seeing people act like that in real life it IMMEDIATELY rang alarm bells in my head.
I am conveying that I am glad the author did not keep going down this path, and immediately had them communicate instead of using further disordered eating as plot
"Do IVs make you gain weight"
OH MY GOD HE GAVE HIM AN EATING DISORDER WHAT THE FUCK OH GOD
THANK GOD FOR COMMUNICATION, I COULD NOT DEAL WITH AN EATING DISORDER ARC WHERE HE EVENTUALLY SAYS HES OKAY WITH HIM BEING AVERAGE WEIGHT