Another BF fat % question

[VeloVT]

well am normal 23% BF. 5 years ago I was 19.5% --underweight.

You may be confusing body fat % with BMI (which gives a ratio of height to weight) here.

While a BMI of 19.5 is considered borderline underweight (although BMI doesn't do a great job accounting for differences in body frame size and body composition), bodyfat of 19.5% for a woman is pretty normal/healthy. Elite female athletes often have BF% of 12-15%, with some female marathoners considerably lower than this (although these extremely low bf%'s -- <12% -- are a concern for bone density issues later in life, since they can cause amenorrhea).

23% bf is also pretty normal/healthy for a woman. According to the government agencies , a BMI of 20-25 is healthy, so a BMI of 23 is healthy too. (I think my BMI is actually about 19.5 right now -- no idea what my bf% is).

EDIT: Oops, looks like I was wrong -- they consider BMIs of 18.5 or below underweight, not 19.5.