“…B) HUMAN DATA. Free and total calcitriol falls to normal during postpartum (206,439,578,746,809,987) and remains normal throughout lactation and postweaning (156,157,206,207,348,385,470,505,632,764,805,871,987). One study found that extended lactation (Ͼ6 mo) was associated with higher calcitriol (348), another report found that calcitriol increased during the postweaning interval of bone recovery (871), and a third report found that calcitriol was 10% higher during lactation and that this persisted during the post-weaning interval (454).…”