I am 48 years old. I am 5'7", and weigh 110-112 lbs. I was a model when I was younger and have always maintained this weight. I was thin as a child. I eat about 1300-1600 calories a day and exercise moderately. I own a boutique so I am still much a part of fashion. I don't feel underweight or anorexic. It's just a way of life for me. I have no health problems, I enjoy looking 15 years younger, and can't see myself any other way. But according to "experts", I'm underweight and borderline anorexic. Am I?