Yoon Hang Kim MD

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.

When the Endogenous Opioid System Falters Endorphin / Opioidergic Dysfunction and Its Link to Dysautonomia

dysautonomia

When the Endogenous Opioid System Falters Endorphin / Opioidergic Dysfunction and Its Link to Dysautonomia

Yoon Hang Kim, MD, MPHBoard-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Medical Disclaimer: This article is for educational purposes only and does not constitute medical advice. The information here should not be used to diagnose or treat any condition without the guidance of a qualified, licensed clinician familiar

By Yoon Hang Kim MD
Lactobacillus Strains and Lactose Intolerance:How Probiotic β-Galactosidase May Restore Dairy Tolerance

probiotic

Lactobacillus Strains and Lactose Intolerance:How Probiotic β-Galactosidase May Restore Dairy Tolerance

Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician www.directintegrativecare.com Introduction Lactose intolerance affects an estimated 68% of the global population, with prevalence rates exceeding 90% in East Asian and West African populations. The condition arises from insufficient production of lactase (also known

By Yoon Hang Kim MD
When Low-Dose Naltrexone Triggers Insomnia: A Teaching Case on MCAS, POTS, Long COVID, and Medication Sensitivity - A Premium Blog Article

When Low-Dose Naltrexone Triggers Insomnia: A Teaching Case on MCAS, POTS, Long COVID, and Medication Sensitivity - A Premium Blog Article

When Low-Dose Naltrexone Triggers Insomnia: A Teaching Case on MCAS, POTS, Long COVID, and Medication Sensitivity Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician www.directintegrativecare.com Introduction In the landscape of complex chronic illness, clinicians frequently encounter patients whose physiology does not follow

By Yoon Hang Kim MD
Low-Dose Naltrexone (LDN) in Solid Organ Transplant Recipients on Chronic Immunosuppression

ldn

Low-Dose Naltrexone (LDN) in Solid Organ Transplant Recipients on Chronic Immunosuppression

CLINICAL REFERENCE NOTE Low-Dose Naltrexone (LDN) in Solid Organ Transplant Recipients on Chronic Immunosuppression Prepared by Yoon Hang Kim, MD, MPH  |  Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Reviewed: May 2026  |  Internal clinical reference — not patient-facing Bottom line The concern is pharmacodynamic and entirely theoretical. There are no

By Yoon Hang Kim MD