Board certified preventive medicine physician. University of Arizona fellowship grad. 20+ years prescribing LDN for chronic pain, autoimmune conditions & complex cases. Author. International speaker. Helping patients find answers.
Discussion Summary By Yoon Hang Kim MD MPH Board Certified in Preventive Medicine | Integrative & Functional Medicine | Root Cause Medicine | LDN Therapy Expert www.directintegrativecare.com 1. Low-Dose Naltrexone (LDN) and the Autonomic Nervous System The discussion began with questions about LDN and autonomic nervous system conditions such as POTS
Lyme
Medical Disclaimer: This article is for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. The clinical approaches described herein reflect one physician’s published model and are presented for scholarly discussion. Nothing in this article should be interpreted as a recommendation for self-diagnosis or
Nootropic
A Critical Evidence-Based Review Yoon Hang "John" Kim, MD, MPH Board Certified – Preventive Medicine | Integrative & Functional Medicine www.directintegrativecare.com Introduction The nootropic supplement market has grown into a multibillion-dollar industry, fueled by consumer demand for cognitive enhancement and productivity optimization. Products marketed as “brain boosters”—often
DISCLAIMER: This article is intended for educational purposes only and does not constitute medical advice. The information presented here is not a substitute for professional medical evaluation, diagnosis, or treatment. Patients with cancer or other serious medical conditions should consult their oncologist and integrative medicine physician before initiating any supplement
gut brain
GUT–BRAIN AXIS Your Gut Under Pressure: How Chronic Stress Hijacks the Gut–Brain Axis and What You Can Do About It
By Yoon Hang “John” Kim, MD, MPH Board-Certified in Preventive Medicine |Integrative & Functional Medicine Physician | www.directintegrativecare.com | March 2026 If you’ve ever been told that traditional Chinese herbs “boost the immune system,” you’ve only heard half the story. The reality is more interesting—and more clinically
By Yoon Hang Kim MD MPH Over the past year, I have dedicated an hour a day to engaging with various AI models. Throughout this journey, one principle has consistently emerged: GIGO—“garbage in, garbage out.” This simple yet profound concept is particularly relevant in the realm of medical AI,
methylene blue
Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & FunctionalMedicine Physician | www.directintegrativecare.com March 2026 Disclaimer: This article is intended for educational purposes only and does not constitute medical advice. Methylene blue should only be used under the supervision of a qualified healthcare provider. Most applications discussed
ENDORPHIN DEFICIENCY
Chronic Pain, Non-Restorative Sleep, and Brain Fog as a Self-Reinforcing Cycle By Yoon Hang “John” Kim, MD, MPH Board-Certified Integrative Medicine Physician | Direct Integrative Care Abstract Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME) is a complex, multi-system illness that remains a diagnosis of exclusion. While its etiology is incompletely understood,
CFS
Chronic Fatigue Syndrome (CFS) and Myalgic Encephalomyelitis (ME) remain among the most misunderstood, underdiagnosed, and poorly managed conditions in modern medicine.
Yoon Hang Kim, MD, MPH Board Certified in Preventive Medicine Diplomate of American Board of Medical Acupuncture Diplomate of American Board of Holistic & Integrative Medicine Abstract Depression remains a leading cause of disability worldwide, and a substantial proportion of patients do not achieve adequate remission with first-line pharmacotherapy or
1:11pm I tried LDN several times and stopped because it felt like too much. Then I read about people who are very medication-sensitive — low endorphin, nervous-system dysregulated types — and that sounds like me. It’s developed into chronic pain. I’m very deconditioned. There’s swelling and discoloration. Both