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Sarah Greenfield

About SPEAKER
About Sarah Greenfield

Sarah Greenfield is a Registered Dietitian specializing in microbiome-focused and body-led approaches to health. With over 15 years of experience across clinical nutrition and functional medicine, she works with GutID to support the use of stool testing and microbiome data in both clinical practice and personalized health strategies.

Her work centers on making complex gut health science easier to understand and apply in everyday life. Sarah has developed programs and educational initiatives for leading wellness brands and supports both practitioners and individuals in using data without becoming overwhelmed by it. She focuses on practical, sustainable approaches that build resilience, support digestion, and help people reconnect with their bodies.

Created a probiotic to support skin conditions which was sold globally
Led nutrition programs and education initiatives for brands including Mark Hyman, NutriBullet, and HUM Nutrition
Helped over 1,000 women improve digestive health through a microbiome-focused, body-led approach
About GutID
GutID
The First True Microbiome Test
Diagnostics & Precision Health
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About the GutID

GutID represents a quantum leap in personalized health, utilizing advanced technology to deliver the most precise and actionable gut microbiome test available today. GutID provides a complete and accurate profile of the bacterial gut microbiome, powered by critical strain-level resolution. This proprietary technology, utilizing AI and advanced long-read sequencing, finally identifies microbiome imbalances and dysbiosis. This approach eliminates guesswork and ambiguity in gut treatment, providing the definitive insights necessary to make truly informed interventions to improve gut function, health and wellness.

Brand Mission

Making the microbiome as important to healthcare, as it is to health

Why People Choose This Brand
  • Strain-level gut microbiome analysis for maximum precision
  • Advanced long-read sequencing combined with AI
  • Clear identification of dysbiosis and microbiome imbalances
  • Actionable insights that remove guesswork from gut health
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