When she’s not diving into research or leading community challenges, you’ll find her hiking with her husband and two kids, sourcing the best seasonal produce at the farmer’s market, or making a blood sugar-balanced smoothie.
Board Certified in Integrative and Functional Nutrition and holding a Master’s in Public Health Nutrition from Case Western Reserve University, Brigid helped launch the Cleveland Clinic Center for Functional Medicine under Dr. Mark Hyman and serves as an adjunct instructor at Case Western’s School of Medicine, where she co-created and teaches the Integrative and Functional Nutrition curriculum.
It’s not about chasing a perfect diet or obsessing over every number.
When Brigid first entered the world of functional medicine, she was struck by the gap:
Great theory, beautiful science—but very little day-to-day support.
We combine cutting-edge science with genuine human empathy and personal considerations, so you feel seen and supported. We apply the science to your real life so your health goals feel achievable.
Healing isn’t found in extremes. We meet you exactly where you are with realistic, science-backed strategies that build confidence and momentum over time—say goodbye to the all-or-nothing diets.
We teach you the science behind your plan, so you feel confident in your choices. Understanding the ‘why’ is key to consistency.
We don’t take shortcuts–we do the hard thing when it’s the right thing. From ingredients to product selections to program pivots to coaching feedback— integrity is our default.
We believe food should be both nourishing and joyful. Every recipe and plan is designed to support your biology and your enjoyment of life.
Community, connection, and coaching are at the heart of what we do. We build supportive and empowering communities that inspire and lift you up, helping you feel less alone and share the momentum.
They’re the ones walking with you day to day—answering questions, coaching through hard weeks, and helping you stay consistent without burnout. They have the best training from Cornell and NYU in addition to a second board certification in functional nutrition.
"People who have an empowering support network typically achieve their fullest potential. Combining that support with a health plan that’s unique to their nutritional needs yields 10 times the results. We’re bridging that gap."
"When you understand what’s going on in your body and the science behind how food affects your quality of life, you’re better able to harness its power and take your health to the next level."
"Changing your mindset and relationship with food is the best investment you can make in yourself that will continue to yield results year after year after year."
"We focus on the root cause of your symptoms and health conditions so that you can feel your absolute best when you wake up each morning. You ARE worth the commitment!"
Brigid Titgemeier, MS, RDN, LD, IFNCP, is a functional medicine registered dietitian and health advocate on a mission to help you transform your health through personalized nutrition.
Throughout her career, Brigid has worked with more than 5,000 clients. She founded the functional nutrition and health consulting business Being Functional Nutrition in 2019 to offer virtual programs and health coaching that provide a personalized, data-driven approach to healing using food as medicine.
With a Masters in Public Health Nutrition, a board certification in Integrative and Functional Nutrition, and training through the Institute for Functional Medicine, Brigid was a founding Dietitian at the Cleveland Clinic Center for Functional Medicine working under Dr. Mark Hyman. She also teaches integrative and functional nutrition at Case Western Reserve University’s School of Medicine.
Michelle Sirmons, MS, RDN, CSSD, joined Being Functional Nutrition in 2021 as the Nutrition Community Manager.
Throughout her career, Michelle has guided hundreds of clients with numerous health conditions - including metabolic dysfunction, diabetes, heart disease, IBS and IBD. Michelle previously worked for Kaiser Permanente, where she led individual and group nutrition appointments with a special focus on diabetes. Prior to that, she was the Regional Nutrition Program Manager and a personal trainer for Life Time Fitness. Michelle combines her expertise in functional medicine and fitness to help individuals use food as medicine to heal their bodies while also supporting an optimal metabolism.
Michelle completed her dietetic internship at Cornell University, her Masters of Science in Human Nutrition and Functional Medicine from University of Western States, and is board certified in sports nutrition.
Jamie Foti MS, RDN, INFCP, is a functional and integrative dietitian who truly believes in the power of food as medicine.
After reversing her own gastrointestinal and autoimmune conditions through food and lifestyle interventions, Jamie ditched her business background in pursuit of a Master’s in Clinical Nutrition from New York University. She also completed her dietetic internship at NYU, which included clinical rotations at Montefiore Medical Center.
Jamie has a board certification in integrative and functional nutrition through the Integrative and Functional Nutrition Academy. She is also certified as a Health Coach through the Institute for Integrative Nutrition, specializing in motivational interviewing and behavior change around food and lifestyle practices. It is her mission to empower others to realize the control they have over their health, especially when battling chronic health issues.
Christina Palmisano, MS, MBA, RDN, LD, IFNCP, is a functional and integrative dietitian who is inspired by the immense impact diet, lifestyle habits, and relationships have on health.
After leaving her career in accounting, Christina chose to go back to school to pursue her true passion, nutrition. Her nutrition career began as a volunteer nutrition assistant at Cleveland Clinic Centers for Lifestyle and Integrative Medicine, where she first met Brigid. It was her experience there that inspired her future in integrative and functional nutrition and her eagerness to impact the health of others through diet and lifestyle changes.
She completed her Masters in Nutrition from Case Western Reserve University, her dietetic internship at Louis Stokes Cleveland VA Medical Center, and her board certification in integrative and functional nutrition through the Integrative and Functional Nutrition Academy.
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of My Food is Health clients say their relationship with food changed for good.
of TBC members who stayed at least 70% on track saw symptom improvements
of members report reductions in cravings in the first 14 days.