Sulfated vitamin D metabolites represent prominent roles in serum and in breastmilk of lactating women.

Background: Concentrations of vitamin D (VitD) and 25-hydroxyvitamin D (25OHD) in breastmilk are low despite the essential role of VitD for normal infant bone development, yet additional metabolic forms of vitamin D may be present. This study evaluates the contribution of sulfated vitamin D metabolites, vitamin D-sulfate (VitD-S) and 25-hydroxyvitamin D-sulfate (25OHD-S) for lactating women and assesses the response to high-dose VitD supplementation.

Methods: Serum and breastmilk were measured before and after 28 days with 5000 IU/day VitD intake in 20 lactating women.

Sit-Stand Desks and Physical Self-care Behaviors in a Family Medicine Residency.

Introduction: More than 50% of primary care physicians' practice involves sedentary desk work. Growing evidence suggests a link between sedentary workplace behaviors and increased morbidity and mortality. Research on the effects of sit-stand desks in the workplace suggests that sit-stand desks reduce sedentary behaviors.