👋Hi! I’m Dr. Sarah Ballantyne, PhD, a science communicator specializing in health and nutrition who is passionate about helping people improve diet quality, nourish their bodies, and build sustainable habits—without dieting. Nutrivore90 is the structured, supportive challenge I created to make that easier, more joyful, and more achievable for everyone.

Why Nutrivore90 Works

Nutrivore90 helps you:

  • Build sustainable, nourishing habits

  • Improve your diet quality without restriction

  • Let go of diet culture and perfectionism

  • Feel supported and encouraged every step of the way

  • Personalize your pace, budget, dietary preferences, and goals

This challenge is flexible—you can start anytime, pause anytime, and move at the pace that works for you.

About Me

I’m Dr. Sarah Ballantyne—a science communicator specializing in health and nutrition with a PhD in medical biophysics, a New York Times bestselling author, and the creator of Nutrivore, a science-backed, positive approach to nutrition focused on nutrient density rather than dieting. I combine research, compassion, and practicality to help people eat better—regardless of their preferences, budget, location or past behaviors—without feeling overwhelmed or deprived.

What Is Nutrivore90?

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December 1, 2025
What Is Nutrivore90?

Nutrivore90 helps you build lifelong nutrition habits with a challenge that actually works—no gimmicks, no guilt, just real results.

To learn more about the tech platform that powers this publication, visit Substack.com.

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