Greer Mcguinness MS, RD, CDN, CLT

Greer McGuinness is a Clinical Lab Educator at Diagnostic Solutions Laboratory, specializing in microbiome-focused clinical education and functional nutrition. With expertise in gut health and laboratory diagnostics, she works closely with healthcare practitioners to interpret microbiome data and translate it into practical, patient-centered care strategies.

Greer McGuinness is recognized for her work in advancing understanding of the human microbiome, particularly in pediatric populations. Her clinical focus explores how early-life microbial development influences growth, immune function, and long-term health outcomes. At the Global Microbiome Congress 2026, she presents on “The Pediatric Microbiome – The Growth, Decline, and Recovery,” highlighting key factors that shape the microbiome across early life stages and strategies to support microbial balance and resilience.