How does understanding weight and stature percentiles help thise in healthcare identify health issues

Most, if not all things that have to do with weight and stature percentiles are important when determining if that particular person has an eating disorder, or if they were just born bigger, if somebody has dwarfism, or they were just have smaller parents. The genes that person inherits are important when looking at the weight and stature of that person. i.e - it would make no sense for somebody who is a height of 6'4" to have a child who grows up and can only achieve a height of 4'0"

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d