RainingRoses wrote:
I hope this is relatively on-topic. (Whatever the topic is ???) What would you think of a 30-something woman who is 5'7" - 5'8" and 105 lbs.? She is obviously "Super Skinny" but is there necessarily a problem there? I ask because I'm a little concerned about someone I'm getting to know IRL...
In addition to what the others said, I would add that if you look at the medical literature there's really no firm consensus about what "underweight" even is.
Overweight/obesity is associated with many weight-dependent medical issues (hypertension, diabetes, etc) which can be reduced by losing weight. There are very few equivalents in otherwise healthy, properly nourished people who are "underweight".
If she's eating properly and there's no underlying pathology causing it, then it should't be too concerning.
I know a little about the subject because I am sometimes below 18 in BMI, especially in the summer when I'm really active...