The Pediatric Intestinal Microbiome: A Conversation With Liz Mumper, MD, FAAP

IFM Director of Medical Education Dan Lukaczer, ND, recently spoke with Liz Mumper, MD, on the topic of the pediatric intestinal microbiome—particularly how a dysbiotic microbiome in early life may lead to disease. Dr. Mumper is president and CEO of The Rimland Center for Integrative Medicine in Lynchburg, VA, which provides individualized biomedical evaluations, therapies, and pediatric care for children with neurodevelopmental problems and their families.

Dr. Mumper is also in general practice at Advocates for Children Pediatrics and is devoted to the care of children with autism and other neurodevelopmental problems, serving as the medical director of the Autism Research Institute for five years. She is a published author, conducts clinical research, and is an internationally known lecturer.

In the following interview, Dr. Mumper shares her extensive knowledge and clinical insights on children experiencing a disturbance in normal gut microbiota and associated neurological symptoms. “There is some evidence that the microbiome you get in your first year is the framework of what you’ll have for the rest of your life,” says Dr. Mumper. “Not that you can’t improve upon it, but it’s very difficult to take a very dysbiotic gut microbiome in the first year of life and make it pristine.” For more, listen here:

The following text gives a bulleted breakdown of some of the topics discussed in the podcast linked above.

Factors Influencing the Pediatric Intestinal Microbiome:

  • High prevalence of C-section births
  • Importance of breastfeeding
  • Antibiotics

How to Restore a Dysbiotic Gut Microbiome:

  • Nutritional therapy
  • Effectiveness of multi-strain probiotics
  • Enhancing the immune system

Connections Between Intestinal Dysbiosis and Autism Spectrum Disorder:

  • Emphasis on early detection
  • M-CHAT formal screening at 18 months or two years


  • Healing the GI tract
  • Strengthening the immune system
  • Promoting healthy sleep habits

Dr. Mumper will be one of the expert speakers appearing at IFM’s 2020 Annual International Conference (AIC).


Related Insights

Group 2

Creating a New, Healthier Normal With Vincent Pedre, MD, IFMCP, and Robert Rountree, MD

In this podcast, Vincent Pedre, MD, IFMCP, an expert on gastrointestinal function, shares his perspective on how a Functional Medicine approach has improved outcomes for his patients. Interviewer Robert Rountree, MD, also a gut specialist, helps to frame how and when a Functional Medicine approach can complement other forms of care.

Read More
Group 2

Understanding the Mind-Body Connection Can Help GI Patients

Given the strong mind-body/brain-gut connection, it is clear that when the normal integrity of the GI tract is compromised, distant systemic complaints can result, even in the absence of overt GI symptoms. Integrative approaches may be helpful for reducing symptoms and reestablishing a healthy gut and a healthy mind.

Read More
Group 2

The Gut-Brain Axis & Systems Biology

The gut-brain axis is the bidirectional communication between the gut and the brain, which occurs through multiple pathways that include hormonal, neural, and immune mediators. Interestingly, the signals along this axis can originate in the gut, the brain, or both, with the objective of maintaining normal gut function and appropriate behavior. 

Read More