Most Recommended Functional Nutrition Experts

As I discovered the power of nutrition and functional medicine to address my own personal health issues, I became inspired to learn the biochemistry behind it all and share what I've learned with those who suffer from chronic health conditions. My specialties and professional interests include: IBS/IBD, autoimmune disease, hormone nutrition, and food sensitivities and intolerances. I take a functional/integrative approach to nutrition which includes advanced GI and food sensitivity testing methods, nutrition counseling, custom meal plans, and supplement therapy as needed.

​Lisa Ackerman is a board-certified functional medicine nutritionist and the founder of Well Fed Wellness, where she guides clients towards better health with science-backed, judgment-free coaching. She holds an M.S. in Human Nutrition from the University of Bridgeport and is completing a Doctor of Clinical Nutrition at Maryland University of Integrative Health. She specializes in gut health, mental health, and metabolic health and loves that a job exists where she can talk about food and nutrition all day long.

I’m a qualified Nutritional Therapist and Personal Trainer, specialising in realistic, science-based nutrition and lifestyle coaching. My approach is designed for busy lives, looking at how you can make health simple and realistic. I’ve been through my own health journey and have been running my own nutrition practice for over a year. I specialise in female health, hormones, gut health and, burnout. I help my clients address all of these concerns whilst still living fulfilling lives.

Hi, I'm Dr. Jeffrey Mark, M.D., a gastroenterologist and functional medicine expert with over 30 years helping people just like you get back to feeling their best. I've dedicated my life to fixing gut health issues, balancing hormones, and tackling heart and energy problems from the root cause—not just masking symptoms with endless meds. My own story started young: At age 10, a bad infection from travel nearly took my life due to a wrong antibiotic, sparking my passion to help others avoid that pain. Later, in my 40s, I battled fatigue, weight gain, high blood pressure, and brain fog from heavy metals and mold toxicity. Using functional and regenerative medicine, I healed myself and now share those tools with you. I earned my B.S. in Neurophysiology from Northwestern University, my M.D. from the University of Illinois College of Medicine, did my internal medicine residency at Northwestern, and specialized in gastroenterology at Chicago Medical School. I'm also certified in medical acupuncture from UCLA and 5X board-certified in functional medicine, anti-aging and regenerative medicine, gastroenterology, obesity medicine, and internal medicine. This lets me blend the best of traditional care with cutting-edge therapies like peptides, PRP, exosomes, and personalized plans. At The Real Gut Doctor, my focus is you: We create custom diets, supplements, and lifestyle tweaks to restore your vitality, mental sharpness, and joy. Whether it's beating IBS, colitis, or low energy, I've guided countless patients to ditch meds, heal after surgery, and live fuller lives. No extreme diets or guesswork—just real results. If you're tired of feeling off and ready for change, let's chat. Visit therealgutdoctor.com or book a discovery call—I'm here to empower you every step of the way!

I'm not your typical nutritionist. I teach busy women science-based tools, to self-manage their energy, focus, weight, gut, and hormone health ...so that they look, feel, and work well. I offer science-based Nutrition and Lifestyle advice that's been proven to work. 1:1 consults, on-line classes, and as a keynote speaker. In organisations, I speak on all thing's wellness (Work + Well series). Curated for professionals these are designed to empower people with the tools they need to stay well. Current seminars are: . Fuel your success (How to get the energy you need to succeed) . Stress RX (Resilience Remedies) . Work-Life-Hormone Balance (Female-specific advice for all ages including Perimenopause & beyond). I do all of this while continuing to contract in senior Project roles - so I live what I teach daily. You'll also find me at the Auckland Executive Club as President in a volunteer role - a not-for-profit club that exists to develop women of all ages, groups, industries and backgrounds in business.

As a Registered Dietitian I am trained in all aspects of nutrition, from the biochemistry of nutrients to the social & cultural factors that influence food choices. I provide nutrition coaching as well as medical nutrition therapy to help manage chronic diseases such as diabetes, heart disease, & obesity using the latest scientific evidence. My work has been featured in outlets such as Women's Health, Reader's Digest, Business Insider, Popsugar, Eat This Not That, SRQ Magazine, Sarasota Magazine, SNN, & more.​ Experience: Bright Body Nutrition, Owner & Registered Dietitian Sarasota Memorial Healthcare System, RENEW Lifestyle Medicine Program Coordinator Education: Tulane University, RDN Florida State University, BS Additional Certifications: Integrative & Functional Nutrition, DIFM Lifestyle Medicine Coaching, ACLM

Kim Ross, MS, RD, CDN specializes in nutrition counseling, wellness programming…

As a NASM Certified Nutrition Coach (CNC) at Same Day Supplements, I specialize in providing science-backed, personalized nutrition guidance to help individuals achieve their health and fitness goals. With expertise in dietary planning, supplement strategies, and performance nutrition, I work to empower clients with practical tools for lasting results. My approach blends evidence-based knowledge with real-world application, ensuring sustainable habits that support both everyday wellness and peak athletic performance.

I am a registered nutritional therapist, who specialises in supporting people with eating disorders, a difficult relationship with food and food distress. This covers a range of issues, from diagnosed eating disorders, to emotional eating, yo-yo dieting, weight concerns and disordered eating. I use evidence-based nutritional therapy with a functional medicine approach, NLP and a range of tools for mindset and behaviour change. I am a Master Practitioner in Eating Disorders and Obesity (National Centre for Eating Disorders). I am currently undertaking MSc in Personalised Nutrition and I am regularly completing continual professional development in the area to keep my knowledge current. I am happy to work with you if you need support with your food habits and food relationship. I also accept referrals from other members, work collaboratively and offer case discussions. Currently practicing online only.

Peter Brukner is a specialist sports and exercise physician with a special interest in nutrition. Peter is the founding partner and Chair of the not-for-profit charity SugarByHalf, and the app-based program Defeat Diabetes. Peter is the founding partner of Olympic Park Sports Medicine Centre in Melbourne and Professor of Sports Medicine at Latrobe University. A founding Executive Member of the Australasian College of Sports Physicians, he served two terms as President and played a key role in establishing sports medicine as a medical specialty in Australia. Peter is the co-author of the widely used text book Clinical Sports Medicine and has been team physician for professional football clubs as well as national athletics, swimming, soccer and men’s hockey teams including Olympic and Commonwealth Games. Peter was the Socceroos Team Doctor at the 2010 World Cup in South Africa, Head of Sports Medicine and Sports Science at Liverpool Football Club from 2010-2012 and Australian cricket team doctor form 2012-17.

Certified nutritionist and fitness trainer and founder of Quarter to Fitness, a women-focused wellness brand promoting sustainable fitness and balanced nutrition for women 25+.

Dr. Basaria is a transformational expert who takes an integrative approach to health and wellness, with a comprehensive focus on a person’s physical, mental, emotional and spiritual needs. Her approach includes using physical activity and food as medicine, working on developing healthy relationships and finding career satisfaction for mental and emotional balance, and using mindfulness, meditation, breathing techniques and yoga- to name a few- as ways to manage stress. To learn more about Dr. Basaria or True Living, visit www.truelivingforlife.com

Dr. Rimas Geiga is a distinguished professional with a diverse skill set, serving as a Medical Doctor, Registered Dietician, and Clinic Nutritionist. With a solid foundation in healthcare, he plays a pivotal role as a private advisor to a consortium of companies operating in the health and wellness sector, offering valuable insights and strategic guidance. In addition to his advisory role, Dr. Geiga is actively engaged in hospital work, bringing his expertise to the forefront of patient care. His commitment to providing quality healthcare is evident in his contributions to the medical field, where he tirelessly works to enhance the well-being of those under his care. Beyond his medical pursuits, Dr. Geiga finds joy in various hobbies that contribute to his well-rounded personality. An avid enthusiast of culinary arts, he explores the world of flavors through his cooking endeavors. Dr. Geiga also embraces an active lifestyle, indulging in cycling adventures that not only promote physical fitness but also reflect his passion for outdoor activities. Wine tasting stands out as another of Dr. Geiga's interests, where he enjoys unraveling the complexities of different varietals and appreciating the artistry behind each bottle. His love for travel allows him to explore diverse cultures, further broadening his perspectives and enriching his experiences. Dr. Rimas Geiga's multifaceted professional background, combined with his dedication to health and wellness, showcases a holistic approach to his career. His commitment to patient care, coupled with a vibrant array of hobbies, underscores his well-balanced and dynamic presence in both the medical and personal spheres of life.

On the quest to find the best way to forever health& fitnessExercise Physiologist (ESSA), Nutritionist, Strength and Conditioning Coach (ASCA), Sports Coach (SMA), Personal Trainer, FitGenes practitioner, Matrix Fitness Australia master trainer

For more than 35 years, I lived with rheumatoid arthritis, allergies, and unpredictable flare-ups. While medications provided temporary relief, they never addressed the root cause. When my daughter began facing her own autoimmune challenges, I knew we needed a deeper, more sustainable approach. That search led me to the gut microbiome and its powerful role in immune function and inflammation. After implementing targeted diet and lifestyle changes, my pain decreased, my energy improved, and my RA symptoms began to stabilize. To better understand the science behind these changes, I became a certified Gut Health Nutrition Specialist. Today, I help individuals identify lifestyle and dietary patterns that contribute to chronic inflammation, empowering them to make informed, sustainable choices that support long-term health from the inside out.

I have received my Master's Degree in Human Nutrition, as well as completed my undergraduate degree in community health and athletic training. In 2019, I was chosen to be a board member of the Minnesota Board of Dietetics and Nutrition, currently, I am the sitting Vice-Chair. I have been working in the Functional Medicine field for over a decade. My experience expands a myriad of populations and needs. Areas of interest include but are not limited to; digestive health, female hormones, anxiety, and eating disorders. I am passionate about healing the body through nutrition, by facilitating detailed nutrition consultations with an emphasis on the root cause of the disorder and/or disease in the body. I have taught several in-house and corporate classes, as well as, co-host a weekly radio broadcast.

I'm a board-certified physician in both Emergency Medicine and Obesity Medicine, and founder of Highland Longevity, a concierge longevity clinic in Fort Worth, Texas. My perspective on metabolic health is shaped by both clinical expertise and personal experience. I lost 87 pounds using GLP-1 medications—but made the common mistake of losing significant muscle in the process. That experience drove me to redesign my entire approach: I subsequently lost an additional 17 pounds of pure fat while preserving lean tissue. This journey transformed how I practice medicine and gave me firsthand insight into the challenges my patients face. With over 6,000 clinical hours in emergency medicine, I've seen the downstream consequences of metabolic disease—and became convinced that the real opportunity lies in prevention and optimization, not just acute intervention. I founded Highland Longevity to bridge the gap between reactive sick care and proactive health optimization. My practice focuses on medical weight loss, hormone optimization, and advanced diagnostics including DEXA body composition analysis and VO2 max testing. I emphasize evidence-based, physician-guided protocols using only FDA-approved medications or properly compounded pharmaceuticals. I speak and write about the science of sustainable weight loss, muscle preservation during caloric deficit, GLP-1 medications, hormone optimization, and the metabolic adaptations that make weight management so challenging for most people. Expertise: Obesity Medicine, GLP-1 Therapy, Metabolic Health, Longevity Medicine, Hormone Optimization, Body Composition