We’re a team of clinically trained dietitians who use 25+ years of functional, holistic and integrative nutrition & wellness experience to help you finally get to the root of your symptoms and heal your body. No rushed visits, no cookie cutter plans.
We are a team of registered dietitians with advanced clinical training in functional and integrative nutrition. We combine food-first strategies, detective-style investigation, and compassionate support to guide clients of all ages toward lasting wellness.
With ISN’s 5 pillar to wellness approach, your case is never “too complicated."
1. Detective mindset: We don’t stop at surface-level answers. We dig into your history, lifestyle, and labs to uncover what’s driving your health challenges.
2. Concierge-style care: You have direct access to us, longer sessions, and ongoing touchpoints — because healing doesn’t happen in 15 minutes.
3. Food + lifestyle first: We start with nutrition, movement, and daily rhythms as the foundation.
4. Layered protocols when needed: Supplements or targeted strategies are used thoughtfully and only when they fit your body and stage of life.
5. Personalized partnership: Every plan is unique, and we walk alongside you, adjusting as your body shifts.
Download our exclusive guide designed to help you navigate your path to optimal health and wellness, for free! And as a bonus, you’ll also get instant access to our gut-healthy grocery guide - crafted to make it effortless to navigate the aisles of the grocery store with confidence.
I’m a Registered Dietitian, Fitness and Lifestyle Expert, and Founder of Isabel Smith Nutrition and Lifestyle. I believe in everything in moderation, including eating a lot of plants and moving our bodies.
I have 15+ years of experience helping people just like you feel better and live happier lives. I help clients of all ages who have goals of weight loss, improved allergies and sensitivities, hormone imbalances and infertility, thyroid and blood sugar issues amongst many others by finding the root cause.
At Isabel Smith Nutrition, we are a team of registered dietitians with advanced clinical training in functional and integrative nutrition. We combine food-first strategies, detective-style investigation, and compassionate support to guide clients of all ages toward lasting wellness.
I earned my B.S. in Dietetics from the University of Florida and completed my clinical training at the Harvard-affiliated Beth Israel Deaconess Medical Center in Boston. I bring extensive experience across clinical settings, outpatient counseling, research, and food service. My clinical expertise includes working with individuals managing oncology, gastrointestinal disorders, cardiovascular disease, liver disease, and transplant-related needs.
I am a registered dietitian and Certified Diabetes Care and Education Specialist specializing in integrative and functional nutrition. I work with both adults and children and have extensive experience supporting patients with complex chronic conditions.
I combine functional nutrition with evidence-based medicine to develop individualized, practical treatment plans that address each patient’s unique needs. My goal is to empower patients with the knowledge and confidence to improve their health in a way that is both sustainable and realistic.
"When I first started working with Isabel, I felt constantly sluggish and bloated, and no amount of healthy eating or exercise made a difference. As we moved through the process, I was surprised by how much the small, targeted changes mattered. Isabel’s knowledge of toxins and how they impact the body is unmatched. After months of thoughtful, step-by-step adjustments, I truly feel like a new man—and it’s all thanks to her guidance."
"Isabel is a true ray of sunshine. During some of my darkest and most confusing health challenges, she gave me real hope. I had seen many doctors, specialists, and dietitians, but she has been the most impactful in helping me heal from mold illness, mast cell activation, and more. She is warm, encouraging, and incredibly knowledgeable. Her personal experience makes her guidance invaluable, and I always finish our sessions feeling lighter and uplifted."
"I don’t know what I would have done without Isabel. Any progress I’ve made is because of her dedication, not the many doctors who never had time to understand my complex issues. After working with her, my energy improved, we uncovered parasites, hidden fungal overgrowth, and food allergies, and I completely changed how I eat. Her calming presence, attention to detail, and steady encouragement have truly changed my health."
"Thanks to Isabel’s support and guidance, I feel so much better. She helped me make healthier nutrition choices in a way that felt natural, intuitive, and totally doable. I love her style and her genuine desire to help. She teaches in a way that makes healthy eating effortless—without pressure or perfection. Because of her, I’m not thinking about eating better…I truly am eating better."
"I came to Isabel during the sickest season of my life. As a dietitian myself, I knew I needed someone skilled enough to handle a complex case with clarity and care. Isabel knew exactly where to begin and guided me through every step. After five months of following her protocols, my health has completely transformed. She didn’t just help me heal—she gave my family a wife and mother who can fully show up again. That is a gift I can never repay."
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