About LDN Direct

LDN Direct is a service of Root Causes Medical Consultants, PLC. It was started by Sajad Zalzala, MD out of a need to give patients across the country access to a potentially beneficial therapy, low-dose naltrexone

The Team

Sajad Zalzala, MD

Dr Zalzala (Dr. Z for short) is Board Certified in Family Medicine. He has a special interest in Integrative and Functional Medicine. He is currently in private practice in Windsor, Ontario and also practices Telemedicine across state lines in the many states where he is licensed. Dr Z graduated from Wayne State University School of Medicine and currently serves at the Vice President of the International College of Integrative Medicine (ICIM).

Marcia Marchant

Marcia currently works as a Dr Z's medical assistant.

Ryan Cloutier AFDNP, CTNC

Ryan is passionate and dedicated to educating and empowering others on how they can reach a state of optimal health. In 2009, Ryan was overcome with a serious gastrointestinal infection that changed his life. The next several years were extremely frustrating and spent dealing with several chronic health complaints that no MD could explain. Frustrated with the traditional medical model, Ryan decided to take matters into his own hands, studying functional medicine and holistic nutrition. For the first time in years, he began seeing improvements to his health and observed first hand the power of holistic nutrition and lifestyle medicine.

Ryan is a Functional Diagnostic Nutrition Practitioner (AFDNP) through the Functional Diagnostic Nutrition Institute and a Certified Transformational Nutrition Coach (CTNC) through the Institute of Transformational Nutrition. Most recently, Ryan has begun a functional medicine mentorship with the Living Proof Institute. Upon completion, the Optimal Health Institute will be a certified Living Proof Clinic.

Ryan believes that his own personal health journey will make him a better practitioner, by creating a lasting relationship with his patients because he recognizes the physical, financial and emotional burdens which result from dealing with chronic disease.

Ryan is devoted to co-creating health with his patients by identifying the root causes of poor health and providing a personalized plan that empowers patients to take back control of their health. In his spare time, Ryan enjoys rock climbing, spending time outdoors, reading, cooking, and traveling. Ryan has always been a strong believer in education, and constantly strives to continue to learn by taking courses and reading the latest books and research on nutrition, fitness, and functional medicine.

Ryan is a living example of the power of lifestyle medicine, and has made it his life’s mission to pay it forward by helping others realize their true health potential.