Integrative Functional & Lifestyle Medicine + LDN & More to help us survive, overcome, and thrive beyond our medical challenges. MCAS, CFS, ME, Chronic Pain, Fibromyalgia, Autoimmune and More

Low Dose Naltrexone (LDN) in Functional Medicine: A Practical Guide by Dr. Yoon Hang Kim in San Antonio

Dr. Kim's LDN Primer Book which covers basics of LDN is now available in Amazon - https://www.amazon.com/dp/B0GZ9R4667/ref=sr_1_1?crid=Y99J3Z8DLKY2&dib=eyJ2IjoiMSJ9.Kq_wzqE15_OGnVOgkdQHbQdwZK32CtfPr6H9aL8NtC2JdRuLQJkskth03cPcjIrlnpNzzTw6NqVAdjbFJvOflQ.owU6k5lJ4jkFwPod1eq9pIC126Fde8sml1nlDi_ameE&dib_tag=se&keywords=Low+Dose+Naltrexone+%28LDN%29+Primer%

Low-Dose Naltrexone and Hormonal Health: What the Evidence Actually Shows

CLINICAL EDUCATION SERIES Low-Dose Naltrexone and Hormonal Health: What the Evidence Actually Shows Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician www.directintegrativecare.com ABSTRACT Background: Low-dose naltrexone (LDN), administered at 1.5–4.5 mg nightly, is increasingly used off-label in integrative medicine

Lactobacillus rhamnosus GG (LGG) in Mast Cell Activation Syndrome: A Strain-Specific Review of the Clinical and Mechanistic Evidence

Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine  |  Integrative & Functional Medicine Physician MEDICAL DISCLAIMER This article is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Mast Cell Activation Syndrome (MCAS) and histamine intolerance are highly individualized conditions, and probiotic responses can vary substantially

Rethinking Cancer at the Root: The Mitochondrial–Stem Cell Connection and an Orthomolecular Approach to Treatment

INTEGRATIVE ONCOLOGY By Yoon Hang Kim, MD, MPH  |  Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Published by Yoon Hang Kim MD  |  Telemedicine across Iowa, Illinois, Missouri, Texas, Georgia & Florida ⚠ Medical Disclaimer This article is intended for educational purposes only and does not constitute medical advice. The therapies

Low-Dose Naltrexone in Pediatric Inflammatory Bowel Disease: Evidence, Dosing, and Clinical Considerations

Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Direct Integrative Care  |  Telemedicine Practice MEDICAL DISCLAIMER This article is for educational purposes only and does not constitute medical advice. Low-dose naltrexone (LDN) is used off-label in children and all pediatric use should be under the

Prolonged Fasting as a Therapeutic Tool: Reversing Insulin Resistance and Type 2 Diabetes

Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Direct Integrative Care Published April 2026 MEDICAL DISCLAIMER: This article is for educational purposes only and does not constitute medical advice. Prolonged fasting carries real risks and should only be undertaken under the supervision of a

PEPTIDE THERAPEUTICS: FDA Regulatory Update & Proposed Timeline  |  April 2026

Yoon Hang Kim, MD, MPH  |  www.directintegrativecare.com KEY DISTINCTION: Removal from Category 2 does NOT equal Category 1 approval. Peptides removed from Category 2 currently occupy regulatory limbo as unapproved new drugs. Full legal compounding access requires PCAC review, a favorable recommendation, and final FDA rulemaking. Until that formal

PEPTIDE THERAPEUTICS: AN EVIDENCE-BASED REVIEW

Updated 4/28/2026 Integrative Functional Medicine Serving IA | IL | MO | GA | FL | TX Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician www.directintegrativecare.com A comprehensive examination of bioactive peptides for fitness, anti-aging, metabolism, cognition, and immune support ⚠️  DISCLAIMER: This review is for

CIRS vs. MCAS: Understanding Two Overlapping but Distinct Chronic Inflammatory Conditions

By Yoon Hang Kim, MD, MPH  |  Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Chronic illness patients — especially those navigating mold illness, Lyme disease, autoimmune conditions, or post-infectious syndromes — frequently encounter two acronyms that are both confusing and critically important: CIRS and MCAS. These conditions share a great deal

Medicinal Mushrooms in the Integrative Care of Gastrointestinal Cancer

Yoon Hang Kim MD | www.directintegrativecare.com Membership-Based Telemedicine | Integrative & Functional Medicine Medicinal Mushrooms in the Integrative Care of Gastrointestinal Cancer Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Medical Disclaimer This article is intended for educational and informational purposes only and does

Hydrogen Sulfide SIBO (ISO): A Comprehensive, Evidence-Based Treatment Guide

Yoon Hang Kim, MD, MPH Board-Certified in Preventive Medicine | Integrative & Functional Medicine Physician Direct Integrative Care  |  Telemedicine Practice (TX, IA, IL, MO, GA, FL) MEDICAL DISCLAIMER: This article is intended for educational and informational purposes only and does not constitute medical advice, diagnosis, or treatment. The content reflects the

Botanical & Nutritional Support for Menopausal Symptom Relief: An Evidence-Based Clinical Review Yoon Hang Kim, MD, MPH  |  Board-

Clinical Wellness Series Certified in Preventive Medicine | Integrative & Functional Medicine Physician MEDICAL DISCLAIMER This article is intended for educational purposes only and does not constitute medical advice. The information presented here should not be used to self-diagnose or self-treat any medical condition. Herbal and nutritional supplements may interact with