Franklin's Root-Cause Practice
for the Symptoms You've Been Told to Live With
We run 200+ biomarkers to find what standard testing misses — thyroid, gut, hormones, diabetes, and neuropathy. 60–90 minute visits in Cool Springs, or by telehealth.
Not sure where to begin? Start with comprehensive labs. We uncover what conventional tests miss.
18 Conditions We Help Solve in Franklin, TN
As Franklin, TN's functional medicine practice, we address the root causes — not just the symptoms — of hormonal imbalances, gut dysfunction, autoimmune conditions, and metabolic disease.
Weight Loss
Root-cause weight loss programs addressing insulin resistance, hormonal imbalances, gut dysfunction, and metabolic drivers — not just calories in, calories out.
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Thyroid
Comprehensive thyroid evaluation and support for hypothyroidism, Hashimoto's, and subclinical thyroid dysfunction using advanced functional testing.
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Gut Dysfunction
Targeted protocols for leaky gut, SIBO, dysbiosis, IBS, and chronic digestive issues — restoring the gut microbiome for lasting whole-body health.
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Autoimmune
Functional approaches to autoimmune conditions that identify and address the environmental, dietary, and lifestyle triggers driving immune dysregulation.
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Type 2 Diabetes
Evidence-based metabolic reset programs that reverse insulin resistance and restore blood sugar regulation through nutrition, lifestyle, and targeted supplementation.
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Neuropathy
Root-cause investigation and treatment of peripheral neuropathy — addressing nutritional deficiencies, blood sugar dysregulation, and inflammatory drivers of nerve damage.
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Anxiety
Functional medicine approaches to anxiety that investigate gut-brain axis dysfunction, nutrient deficiencies, adrenal imbalances, and neuroinflammation.
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ADHD
Comprehensive functional evaluation for ADHD addressing nutritional status, gut health, toxic burden, and neurological imbalances that affect focus and attention.
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Autism
Integrative support for autism spectrum conditions focusing on gut health, immune function, nutritional optimization, and reducing toxic burden.
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Food Allergies & Sensitivities
Advanced food sensitivity testing and elimination protocols to identify hidden triggers driving inflammation, fatigue, skin issues, and digestive symptoms.
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Female Hormones
Personalized hormone balancing for PMS, PCOS, perimenopause, and menopause — using comprehensive hormone panels and bioidentical protocols tailored to your cycle.
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Men's Health
Functional evaluation and optimization of testosterone, adrenal health, metabolic function, and vitality for men experiencing fatigue, low libido, or hormonal decline.
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Mold Toxicity
Comprehensive mold and mycotoxin testing and detoxification protocols for patients suffering from chronic fatigue, brain fog, and unexplained multi-system symptoms.
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Migraines
Root-cause investigation of chronic migraines addressing hormonal triggers, gut-brain axis dysfunction, nutrient deficiencies, and inflammatory food sensitivities.
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Candida
Targeted antifungal protocols and gut restoration programs to address systemic Candida overgrowth driving fatigue, brain fog, sugar cravings, and digestive distress.
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Parasites
Advanced GI mapping and targeted parasite eradication protocols to resolve chronic digestive symptoms, immune dysfunction, and unexplained fatigue.
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MTHFR
Specialized support for MTHFR gene mutations affecting methylation, detoxification, and neurotransmitter production — with targeted nutritional interventions.
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POTS Syndrome
Functional medicine evaluation of POTS and dysautonomia addressing root causes including mast cell activation, Lyme co-infections, and autonomic nervous system dysregulation.
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Find the Cause. Live the
Solution.
Dr. Brandon Mannie is the board-certified functional medicine practitioner behind Franklin, TN's Functional Health Advantage. With over 400 hours of post-graduate training in clinical nutrition and functional medicine, he graduated from Northwestern Health Sciences University in 2004 and has since consulted with over 3,000 patients across 21+ years of practice. Through 100% virtual telehealth — available nationwide — he helps patients uncover the root cause of chronic illness.
Board-Certified Functional Medicine Practitioner
Over 400 hours of post-graduate training in clinical nutrition and functional medicine, with 21+ years of private practice experience in Franklin, TN.
3,000+ Patients Helped
Specializing in weight loss resistance, peripheral neuropathy, type 2 diabetes, and autoimmune disease with a proven track record of results.
100% Virtual Telehealth Nationwide
All consultations happen via secure, HIPAA-compliant telehealth — no travel, no waiting rooms. Lab kits are shipped directly to your home for most testing panels.
Continue Your Wellness
Follow-up consultations, lab re-testing, protocol adjustments, and ongoing support to keep you thriving at every stage.
How Functional Medicine Works
Our streamlined process makes beginning your functional medicine journey in Franklin, TN clear, supported, and stress-free — from the first call to long-term wellness.
Comprehensive Intake
A 30-minute deep dive into your complete health history, symptoms, lifestyle, and goals — not a 10-minute checkup.
Advanced Testing
Functional lab panels that reveal what standard tests miss — from micronutrients and gut health to hormones and inflammation.
Personalized Protocol
A customized healing plan combining targeted nutrition, supplements, lifestyle changes, and when appropriate, bioidentical therapies.
Ongoing Partnership
Regular follow-ups, lab re-testing, and protocol refinements to ensure you're progressing and thriving long-term.
Real Results. Real People.
"After years of being told my labs were 'normal,' Dr. Mannie finally found the root cause of my fatigue and brain fog. Within three months I felt like myself again. The thoroughness and compassion here is unlike anything I've experienced in conventional medicine."
"My husband and I both started the gut health program and the results have been life-changing. The personalized approach — actual testing, not guessing — made all the difference. We've both lost weight, sleep better, and have energy we haven't had in years."
"I came in with pre-diabetes, chronic fatigue, and 40 extra pounds. The metabolic reset program was challenging but completely sustainable. Down 35 lbs, A1C back to normal, and I finally understand how my body works. Worth every penny."
"The initial 30-minute consultation alone was more valuable than years of 10-minute appointments elsewhere. They listened, tested everything, and built a plan that actually addressed my symptoms. I finally feel heard and supported."
"After years of being told my labs were 'normal,' Dr. Mannie finally found the root cause of my fatigue and brain fog. Within three months I felt like myself again. The thoroughness and compassion here is unlike anything I've experienced in conventional medicine."
"My husband and I both started the gut health program and the results have been life-changing. The personalized approach — actual testing, not guessing — made all the difference. We've both lost weight, sleep better, and have energy we haven't had in years."
"I came in with pre-diabetes, chronic fatigue, and 40 extra pounds. The metabolic reset program was challenging but completely sustainable. Down 35 lbs, A1C back to normal, and I finally understand how my body works. Worth every penny."
"The initial 30-minute consultation alone was more valuable than years of 10-minute appointments elsewhere. They listened, tested everything, and built a plan that actually addressed my symptoms. I finally feel heard and supported."
Why Your Labs Look Normal — And What to Test Instead.
Your doctor said everything looks fine. Here's why you can still feel terrible — and the 12 markers most standard panels never check. Written by our board-certified practitioners.
No cost, no obligation.
Franklin, TN Functional Medicine FAQs
Our Franklin, TN team is always happy to help. Call us anytime or send a message and we'll respond within a few hours.
Ready for Functional Medicine in Franklin, TN?
Join over 3,000 patients who have transformed their health with Dr. Brandon Mannie's functional medicine approach in Franklin, TN. Your free discovery call is the first step.
Ready to Start Your Journey?
Book your 20-minute discovery call. We respond within 24 hours.
Functional Medicine in Franklin, TN
Functional Health Advantage is a Franklin, Tennessee functional medicine practice helping patients across Williamson County and the greater Nashville area uncover the root cause of chronic illness. From our Franklin, TN base — with 100% virtual telehealth available nationwide — we provide personalized, evidence-based care for 18+ conditions.
Our Location
Highwoods Cool Springs III
725 Cool Springs Blvd #600
Franklin, TN 37067
Office Hours
Mon–Fri
8:00 AM – 5:00 PM
Sat: By Appointment
Service Area
24+ Middle TN communities
Brentwood, Thompson's Station, Spring Hill, & more
Conditions We Treat in Franklin, TN
Root-cause functional medicine protocols for these and more.
