Registered Dietitian (RD/RDN)

A Registered Dietitian (RD) or Registered Dietitian Nutritionist (RDN)—legally protected titles that are interchangeable—is a credentialed nutrition professional who has completed a graduate degree in dietetics, a supervised clinical practice program, and a national board examination. Unlike the unregulated title 'nutritionist,' an RD/RDN has standardized, evidence-based training in medical nutrition therapy and can provide personalized dietary recommendations based on individual metabolic status, lab results, and health conditions. For women with PCOS, working with an RD/RDN who has experience in PCOS and hormonal health ensures that dietary guidance addresses the specific intersections of insulin resistance, inflammation, and hormone balance unique to the condition.