I have a conflicting view on this. I have good self-esteem about my body because I know I'm healthy, but I still notice every little imperfection. As a child, my parents equated being fat with being a bad person. They would say things such as "So-and-so needs to get off his/her fat lazy ass," and as a child, it makes an impact some might not expect.
I'm somewhat neurotic about my weight. I'm tall and thin and have a naturally high metabolism - I'm lucky that way - but I'll still get concerned if I notice my pants are a little tight. I'm female, so I store fat around my butt and thighs, and I'm a little self-conscious about them. I won't wear empire-waisted or most sheath dresses because I think they make my hips look wide.
I know I'm healthy, and every time I start freaking about about my body, I try to remind myself of that, but it can be hard sometimes. Lesson here is: Be careful what you say around your children.