
Effect of RYGB on BMI and Leptin. (A) Change in BMI (kg/m2) from pre-surgery to post-surgery of the RYGB cohort. (B) Change in leptin (ng/mL) levels from pre-surgery to post-surgery of the RYGB cohort. Pre-op readings are taken as an average of all records per patient for a trait up to 1 yr prior to surgery. Post-op readings are an average of post-op records recorded between 6 mo and 36 mo post-surgery.











