Well, a study was done in which participants were asked these very questions prior to embarking on a 48 week weight loss program. Here's what the participants said:
Now...do you know how much weight you could expect to lose if you went and got gastric bypass surgery?
Can you see what's happening here? Two words:
Wanna know what happened at the end of the study?
So what was learned from the study?
...most people have an unrealistic ideal weight in mind to start, then go on a weight loss diet and expect to lose more weight than can be achieved by surgically altering the size of the stomach!
It's no wonder weight loss is so frustrating!
So in order to answer the question of "What is my perfect body weight," I believe the words realistic, achievable and sustainable need to be taken into consideration.
If your ideal body weight isn't these things, you are only setting yourself up for disappointment.
For some help with what your (realistic) ideal weight might be, check out this Ideal Weight Calculator. It uses 4 different methods to help determine healthy, achievable and sustainable ideal body weight ranges.
It's one of my favorites!
Likely the ideal body weight you come up with isn't the weight you were in high school or the one you fantasize about. But don't get so caught up in feeling like you have to lose 40 pounds that you forget to lose 1 pound.
Fun (or not so fun) weight facts:
Here's some more:
Women tend to desire an an unrealistically low body weight, while men tend to allow their ideal weight to be higher than medically recommended.
Personal Nutrition Guide Home Page.