I agree that past a certain age it is unacceptable to not even at least TRY to be normal (although 14-16 is a bit harsh if the child can't get a job or live on their own, hence buy their own food).  On the one hand, with cases of childhood abuse or household dysfunction, one often sees that the children grow up to be dysfunctional because they have a different concept of what is normal, and it takes a long time to figure out what normal is when you have come from an extreme.  On the other hand, I fail to see how any person, whether they were raised in a fat household or not, could see being obese as normal, considering they probably are exposed to normal weight individuals every single day and in every single movie and TV show, and when they get a checkup at the doctor, etc etc etc.  This is what scares me about the recent statistics saying that there are more obese than overweight people.  It has become our new normal, so now there might be a whole generation of young adults in the future who literally can't see past the fat of society.