Weight and even BMI can be misleading. It depends on too many other factors. I would suggest a scale which connects to the effects the weight has on the body.
For example, from 1 to 10
1 - dangerously thin, basically skin and bones. Severe eating disorder.
2 - considered thin even by the mainstream
3 - average, normal, this is what mainstream people want to be if they are not at this size
4 - visibly chubby, but still able to hide it somewhat by clever clothing choices, sucking the belly in, and a favorable viewing angle
5 - fat, and there is no hiding it, no matter what clothes and posture. Belly sticks out even if sucked in, or hips and shoulders are wide enough to be considered not just chubby, but definitely fat.
6 - so fat that it starts to seriously affect what one can and cannot do, walking becomes waddling, folds can appear on different parts of the body, belly can firmly rest in the laps when sitting, some chairs become too tight, some difficulties when picking ups something from the floor, basically the biggest size one can get without having either a severe eating disorder or being into feederism, and the biggest size most people will regularly see outside reality TV, or the Internet.
7 - fatter than most things are designed for, cannot fit into small cars, into some restaurant booths, and even the largest clothes in supersize clothing stores start becoming too small.
8 - still being able to care for themselves, but only barely, and with great difficulties. Standing up, or going up a single flight of stairs, or walking more than a few dozen steps, or just standing more then a few minutes are all big achievements at this size, leading to complete exhaustion.
9 - requires a caretaker for everyday life, but still retains some mobility.
10 - completely bed-bound
For example, from 1 to 10
1 - dangerously thin, basically skin and bones. Severe eating disorder.
2 - considered thin even by the mainstream
3 - average, normal, this is what mainstream people want to be if they are not at this size
4 - visibly chubby, but still able to hide it somewhat by clever clothing choices, sucking the belly in, and a favorable viewing angle
5 - fat, and there is no hiding it, no matter what clothes and posture. Belly sticks out even if sucked in, or hips and shoulders are wide enough to be considered not just chubby, but definitely fat.
6 - so fat that it starts to seriously affect what one can and cannot do, walking becomes waddling, folds can appear on different parts of the body, belly can firmly rest in the laps when sitting, some chairs become too tight, some difficulties when picking ups something from the floor, basically the biggest size one can get without having either a severe eating disorder or being into feederism, and the biggest size most people will regularly see outside reality TV, or the Internet.
7 - fatter than most things are designed for, cannot fit into small cars, into some restaurant booths, and even the largest clothes in supersize clothing stores start becoming too small.
8 - still being able to care for themselves, but only barely, and with great difficulties. Standing up, or going up a single flight of stairs, or walking more than a few dozen steps, or just standing more then a few minutes are all big achievements at this size, leading to complete exhaustion.
9 - requires a caretaker for everyday life, but still retains some mobility.
10 - completely bed-bound
5 years