Can't stop thinking about the concept of most of the East Blue 5 being underweight or nutrient deficient when they join the crew due to various survival and coping circumstances and then, with Sanji's care, gradually getting up to healthy weights, getting stronger, having more energy, etc. and how day to day it might go unnoticed but at some point Zoro finds that he's less tired than he used to be 2/3rds through a fight. At some point Usopp holds his slingshot back as far as it goes and his arm doesn't tremble. At some point Nami gets up from her desk and her eyes don't cloud with stars. At some point Luffy actually fills out his clothes, and he can stretch that much further. And it's all so quiet, the way it happens. Subtle enough they don't know how to say thanks to Sanji, and they have no way to repay him. So instead they treasure him. They praise him. They fight for him. They make him belong. It may not always get through Sanji's thick skull, but in their own way, they try to feed him back. He doesn't even know that he's their life force.
I like how this goes well with how the art evolved, and also that this is at least partially canon considering Sanji himself for his 2y training has this though of "If I can cook better I'll make them stronger". Whatever their condition, Sanji did feed them better, from him learning to estimate quantities for Luffy, to more balanced, healthier meals, and also, better taste, because good food does wonders on the mind as well, especially with how much love it was made ♥
