About
Dr. Cheng Ruan trained in internal medicine and holds board certification in that specialty. He graduated medical school in 2009 and pursued additional training in functional and integrative medicine. He founded Texas Center for Lifestyle Medicine in Houston in 2017, building a model designed to bring lifestyle-based care within reach for underserved populations.
Dr. Ruan authored the "Ultimate Guide for Type 2 Diabetes Reversal" and co-created the Layers of Living Success Diabetes Program. He hosted both the Reverse Brain Disorders Summit and the Better Brain Health Summit. He has spoken at the Chronic Pain Summit, the Integrative Medicine for Mental Health conference, and the Environmental Toxin Annual Conference. His clinical interests span brain health, neuroplasticity, diabetes reversal, autoimmunity, dysautonomia, POTS, MCAS, and the relationship between belief systems and biology. In December 2025, he stepped back from direct patient care to focus on program development and broader partnerships, while remaining deeply connected to TCLM. Outside medicine, he enjoys photography with his daughters, authentic Asian cuisine, and pushing others to grow beyond their comfort zones.
Education & Training
Medical School
Medical school (unspecified), graduated 2009
Additional Training
Additional training in Functional Medicine and Integrative Medicine
Certifications
Conditions Treated
Who is Dr. Ruan right for?
Dr. Ruan is a strong fit for patients managing complex chronic conditions like diabetes, dysautonomia, POTS, or autoimmunity. His focus on root-cause investigation suits patients who have not found answers through conventional care. Those interested in the connection between mindset, biology, and disease will find his approach compelling. His work in program development also serves patients who learn well through structured educational formats like TCLM University.
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Frequently Asked Questions
Dr. Ruan focuses on diabetes reversal, brain health, autoimmunity, dysautonomia, POTS, and MCAS. He approaches each condition by investigating root causes rather than managing symptoms alone. His clinical interests also include neuroplasticity and the relationship between belief systems and physical health.
In December 2025, Dr. Ruan stepped back from direct patient care. He now focuses on program development and broader partnerships while remaining actively connected to Texas Center for Lifestyle Medicine. Patients seeking direct care can see Dr. Farah or Dr. Kelley at the practice.
Dr. Ruan co-created the Layers of Living Success Diabetes Program as a structured approach to reversing Type 2 diabetes. The program combines lifestyle interventions, behavioral change, and root-cause medicine. He also authored the "Ultimate Guide for Type 2 Diabetes Reversal" as a companion resource.
Dr. Ruan has presented at the Chronic Pain Summit, the Integrative Medicine for Mental Health conference, and the Environmental Toxin Annual Conference. He also hosted the Reverse Brain Disorders Summit and the Better Brain Health Summit. These engagements reflect his expertise across neurology, metabolism, and integrative medicine.
Dr. Ruan holds board certification in internal medicine and graduated from medical school in 2009. He pursued additional training in functional and integrative medicine after completing his core clinical education. That combination shapes his root-cause approach to chronic disease.
Yes, Dr. Ruan plays an active role in patient and provider education. He founded TCLM University in 2020, which delivers low-cost diagnosis-specific courses globally. His summits and published guides extend that educational reach further.
Doctor profile last updated March 21, 2026