Inclusion Criteria:

- Normal and obese (>95th BMI%) females

- Weight of 24 kg or more

- Early to late puberty (expected age range 7-18)

- Screening labs within age-appropriate normal range, with the exception of a mildly
low hematocrit (see below) and the hormonal abnormalities inherent in obesity which
could include mildly elevated LH, lipids, testosterone, prolactin, DHEAS, E2,
glucose, and insulin and decreased FSH and/or SHBG

Exclusion Criteria:

- Screening labs outside of age-appropriate normal range

- Hemoglobin <12 mg/dL and hematocrit<36% (Subjects will be offered the opportunity to
take iron supplementation for 60 days if their hematocrit is slightly low (33-36%)
(suggestive of iron deficiency anemia) and will then return for retesting of their
hemoglobin/hematocrit. If still <36%, they will be excluded.)

- Morning Cortisol <5 g/dL

- 17-hydroxyprogesterone >295 ng/dL

- Weight<24 kg

- History of Cushing's syndrome or adrenal insufficiency

- Pregnant (self reported)