Dr. Michelle Perro, MD, DHOM

Integrative Pediatrician

Executive Director, GMOScience | Co-Author, What’s Making our Children Sick? | Columnist, Townsend Letter and Pediatric Pearls

With over 38 years in acute and integrative medicine, Dr. Perro is a veteran pediatrician. Over fifteen years ago, she revolutionized her clinical practice to integrate pesticide and health advocacy. During her long career, she both directed and worked as an attending physician in New York’s Metropolitan Hospital and UCSF Benioff Children’s Hospital Oakland. She has also managed her own company, Down to Earth Pediatrics, which innovated a new field of integrative urgent care medicine. Dr. Perro co-authored the acclaimed book, What’s Making our Children Sick, has authored numerous publications, and writes a new column in the journal, Townsend Letter. Currently, she lectures, consults, works at the Northern California integrative health center, Gordon Medical Associates, and is Executive Director of the non-profit scientific-based website GMOScience.org. Learn more about Dr. Perro’s work at GMOScience.org. GMOScience.org

Dr. Michelle's Tips For
A Healthy Microbiome

Dr. Nicole's Top Picks


You are eating for two; yourself and your bugs! My tip for wellness is that although there are those people that eat mostly for taste and there are some that eat for health, all eaters should consider what foods we should consume for our cohabitants. They do enjoy a wide range of organic, plant-based varieties from the menu!
So many bug rockstars, it’s hard to choose just one of the hall-of-famers. However, since the baby biota is one of my favorite topics, I would be remiss not to call out Bifidobacterium longum subspecies infantis. B. infantis is able to digest human milk oligosaccharides which don’t provide any nutrition value for the infant, just their microbes. They display anti-inflammatory activity and decrease leaky gut. A preponderance of B. infantis in babies’ guts creates an intestinal milieu that is less hospitable for pathogens to grow.
Approximately twenty years ago, when I first began noting the rise in neurocognitive and neurobehavioral dysfunction in children, I recognized that there was also a concomitant rise in gastrointestinal complaints. Further investigation revealed evidence of intestinal permeability and dysbiosis. Via diet alterations away from processed, food-like products to organic, real food as well as utilizing integrative tools in my toolbox, the children's symptoms improved along with documented changes in their microbial make-up. This was the beginning of my journey and understanding of the link between microbes, the gut-brain-axis and real healing.
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