While your child may pretend he’s a superhero, did you know that he is actually a super-organism? That’s right—human beings are super-organisms, made up of a complex blend of genetic traits from human and microbial cells that control and influence our world. Our 10 trillion human cells are outnumbered by 100 trillion microbes—that’s about 3.5 to 4.5 pounds of microbes in our digestive system alone! Can you imagine? Could these tiny stowaways be controlling our genes? Influencing our moods? Determining whether we are sick or healthy?
 A child’s DNA isn’t her destiny. Instead, her environment, especially the microbiome (all the microbes in and around her body), influences her gene expression. Genes may load the gun, but our environment and lifestyle choices pull the trigger. Encoding about 3.3 million non-redundant genes (out of more than 10 million identified), the microbiome can be viewed as a “new organ” playing a vital role in our health. It is unimaginable, but true, that something so microscopic can influence so much! Mind blowing!
What determines our microbiome? We are one with our environment.
When a child is born into this wonderful world, he begins to acquire information from new stimulus in the environment. One of the most important forms of new stimulus is the microbes that first interface with the body. A newborn baby does not yet have established colonies of bacteria or other microbes on the skin, lungs, or intestines. When he passes through the mother’s birth canal, he begins to acquire bacteria and other microbes from his mother and the outside world, and his gut begins a harmonious and beneficial relationship with more than a thousand strains of symbiotic bacteria. The modern Western lifestyle (what we eat, how we live, the choices we make) is one of the most important factors influencing our microbiome and may be responsible for inflammation leading to chronic diseases. Here are some of the primary ways that we acquire our microbiome:
Our mamas: delivery and beyond. Initial inoculums of microbiota from the mother occur during birth and our bodies begin a harmonious and beneficial relationship with more than a thousand strains of good bacteria. In a vaginal delivery, the microbiome develops species similar to the mother’s vagina and gut. In a cesarean section, the microbiome develops predominant species similar to skin flora of the hospital attendants and the mother and have an increase in the chance of childhood chronic disease like asthma, allergies and autoimmune diseases.
Breastfeeding contributes to a microbiome that looks different from the microbiome of formula-fed infants. These microbial differences can ultimately influence gene expression and physiological changes that impact everything from metabolism to immune function. The microbes we acquire at birth affect our health throughout our lives. Who knew that early exposure to microbes can influence so much?
We are what we eat. Yes, that burger or veggie that you eat can affect the composition and metabolism of our microbiome, which is directly related to our health as we could be feeding the good or the bad bugs. A high fiber, nutrient-rich diet can increase beneficial bacterial colonies, enriching the microbiome, while eating the wrong foods can create an inflammatory effect leading to chronic disease (so put down that soda). When we eat, remember that we are eating for 100 trillion, not just one.
Chronic stress (emotional or social), that includes work and our inlaws, can raise stress hormones (CRF) that negatively impact the microbiome, which in turn, alter gut permeability, lead to inflammation, and ultimately influence our epigenetics. This connection also works vice versa, as the wrong microbes can talk back to the brain and create more stress and inflammation. Something to keep in mind next time you host a family reunion (kidding).
Environmental contaminants. (Xenobiotics/pesticides, antibacterial products and other chemicals) There tens of thousands of synthetic chemicals that are anti-microbial or that can harm our internal microbes. Think about this every time you use a disinfectant product.
Use of medications. Common pills we pop, including NSAIDS (like ibuprofen), birth control pills, steroids (like asthma medications), antibiotics, chemotherapy drugs and radiation therapy, antidepressants, antipsychotics, drugs used for sleep, acid-blocking drugs, opiates and other pills can all impact our microbiome negatively. So always think twice before you take a pill. Weigh the risks versus the benefits of the particular medication and keep an eye towards replenishing or restoring the microbiome if you must take one.
How the bugs affect us.
Our microbiomes have innumerable functions, playing an important role in digestion, metabolism, immune and defense functions among others. For a healthy immune system, the body is dependent on a good relationship with the beneficial bacteria that live in the digestive tract, and are also involved in:
With trillions of tiny organisms invading our children’s bodies and influencing everything down to their genetic code, it is empowering to think that every bite we feed our children can have a profound impact on their health! So the next time your child puts on a cape, remember the secret microscopic organ that controls your child’s world. As your little superhero is actually a superorganism! So fascinating!!
What daily methods do you implement to ensure a healthy internal and external world for your child and their trillions of friends?
Madiha Saeed, MD ABIHM
Holistic Mom, MD
PS: “What we put in our mouths can either help us or heal us, improving or activating our immune system.” From The Holistic Rx: Your Guide to Healing Chronic Inflammation and Disease
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