👋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.
What You’ll Get as a Subscriber
Nutrivore90 is a 90-day habit-building challenge designed to help you improve diet quality and ditch diet mentality through simple, actionable weekly goals and daily encouragement.
Here’s what you can expect:
13 weeks of guidance, mindset tips, and encouragement
Nutrivore plate-building strategies + daily serving goals
Weekly journal prompts to build self-awareness and flexibility
Action steps to help you implement the challenge in real life—bite-sized and doable
15 downloadable PDF guides, each one packed with tips, tools, and encouragement to help you stay consistent and motivated
To participate in Nutrivore90—even at the free level—you must be a subscriber. Each Monday, you’ll receive an email with that week’s habit focus, a new PDF guide, and everything you need to stay on track.
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.
Free vs. Paid Subscriptions
Free Subscribers Receive:
Weekly Posts delivered to your inbox each with a free PDF guide, journal prompt, action steps, and mindset tips
Paid Subscribers Unlock:
Daily Journal Prompts to help you reflect more deeply, stay aware of your habits, and connect each week’s focus to your daily life.
Daily Challenge Videos offering short, encouraging lessons with practical strategies and steady motivation to help you stay on track.
Full Community Access including chat threads, comments, polls, and supportive spaces to share wins, ask questions, and learn from others.
Office Hours Q&A three times per week, where I or a member of the Nutrivore90 Team answer your questions and offer personalized guidance.
Full Archive Access so you can review past content, restart the challenge, or move at your own pace anytime you choose.
Your paid subscription directly supports the creation of these resources and keeps the entire challenge sustainable.
Ready to Join Us?
Want the full details behind how the challenge works?
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.
