As part of this study, you will be asked to fill out a questionnaire that asks about your medical history, weight history, family history, reproductive history, and birth control/hormone use. The questionnaire should take about 20 minutes to complete, and you will need to complete it only once. You will have your height and weight measured, and about 4 teaspoons of blood will be drawn to test for insulin resistance (or pre-diabetes). You will be required to fast, not eat or drink anything except water, for 8 hours before having this blood sample drawn. If you are premenopausal and still have both your ovaries, you will have an additional 4 teaspoons of blood drawn to test for PCOS. You will complete the questionnaire during your first visit or at home and will bring it back with you when you come back for your fasting blood test appointment.