Heal your gut and protect your brain
OLIV
functional nutrition practice
Courtney Castler, MS-HNFM
Step beyond symptom management and cookie cutter programs. OLIV empowers you to live in alignment with your highest potential guided by science.
Discover Precision Health and Wellness
Restore your health with our root-cause approach
If you're tired of feeling tired, frustrated with your health, or stuck in a cycle of symptoms without real answers, you are not alone.
At OLIV, we believe that your health deserves more than a quick fix. We go beyond symptom management to uncover the root causes that are holding you back.
Through advanced testing, personalized nutrition, and integrative therapies, we help you restore balance, optimize your body, and reclaim the energy and confidence you deserve.
Wellbeing-designed around you
Meticulously tailored to your biology and lifestyle, OLIV is the future of functional wellness—crafted for those who value health as their greatest asset.
Why Choose OLIV?
Founded by Courtney Castler, MS-HNFM—a functional nutritionist. OLIV was created to elevate the way people experience health: with precision, purpose, and ease. OLIV's approach uses genomics, biometrics, and functional nutrition to reduce disease risk, address current healthcare concerns, and unlock true potential and longevity.
Not a program. A lifestyle.
Stop guessing. Get clear answers, a personalized plan, and the support you need to finally feel your best and live your life—uninterrupted from poor health.
an experience tailored to you.
High Standards
We partner only with advanced diagnostic labs and supplement companies that have been thoroughly vetted for quality, precision, and scientific integrity.
Results-Driven
We’re deeply committed to measurable, meaningful change—leveraging advanced tools and personalized strategies to help you reach your wellness goals.
Science-based
We stay ahead of clinical research—applying only proven, evidence-based methods that meet the highest standards in functional medicine and longevity.
Comprehensive
Our approach considers diagnostics, personal history, nutrition, and lifestyle to create a roadmap for lasting vitality and well-being.
”Working with OLIV has been truly transformative. For the first time, I felt seen—not just as a client, but as a whole person. The level of detail, personalization, and care went far beyond anything I’ve experienced in healthcare.”
Sarah M.
Companies we trust
We carefully select companies that support the depth and integrity of your wellness journey.
Get in touch
Want to know more?
Making a health change can feel overwhelming, but at OLIV, we make it clear and simple. Connect with a member of our team who will listen to your questions and help guide you in the right direction.