Is a big collection of bacteria the best inheritance you can give your baby?

In preparation for childbirth, excited parents-to-be envision life with their new child, choosing outfits, imagining conversations, and planning outings. It’s safe to say that few parents daydream about their baby’s microbiome.

That may soon change.

 Know the stakes

The human microbiome is a vast community of more than 10,000 distinct microbial species harmoniously colonizing our skin and our mucus membranes. Most of these microbes live in our gut. Far from simply being along for the ride, our flora—which includes viruses, archaea, fungi, and, most famously, bacteria—influences our digestive function and directs our immune system. Our microbial makeup may even predispose us to allergic, mental, and cardiovascular illnesses.

Sow the seeds

So where do all these bugs come from? In years past, childbirth was seen as the great initiator, colonizing the otherwise sterile environment of a baby’s gut. Bacterial fragments detected in both placenta and amniotic fluid now suggest that this transfer begins during pregnancy.

Dr. Zeynep Uraz, ND, stresses the importance of pregnant parents eating a diverse, nutrient-rich diet for a fetus’s microbial community. High-fiber, low-saturated fat diets are thought to be most beneficial and are associated with lower rates of allergic disease. Diet is an especially important focus in cases where a parent’s antibiotic use or even their anxiety risk affecting the fetal flora.

In addition, food preferences may be set in utero by the flavor of the amniotic fluid as it fluctuates according to parental diet. Eating a wide range of flavors in pregnancy may predispose a child to a more diverse palate in childhood. Perhaps this is the best way to avoid future fights over vegetables?

Newborn flora

Birth provides an important opportunity for contact between a newborn and its parent’s bacterial cornucopia. Children born vaginally have a more diverse microbiome than those born by Caesarean section, and research continues to investigate whether these differences affect children’s health in the long term.

Like amniotic fluid, human milk is delicately seasoned by the lactating parent’s menu choices, potentially influencing tiny taste buds. Friendly bacteria and immune factors in milk continue the colonization of the gut and get the immune system ready for action. When possible, breastfeeding/chestfeeding provides the ideal food for a baby’s flora.

Factors in the newborn’s environment can also help gird the developing microbiome.

• Farm kids have lower rates of asthma and allergic disease than their urban counterparts, and changes in flora may be responsible.
• Luckily for city dwellers, contact with a furry pet in early childhood may modify the microbiome while reducing incidence of wheezing.
• Having a sibling is also associated with a more robust community of friendly flora.
• Outdoor play is an additional bacteria booster, according to Dr. Uraz.

Eczema and wheezing may be further targeted through probiotic supplementation. In one study, probiotics given to parents prenatally and children through to age two resulted in lower rates of eczema and wheezing at age 11.

This remarkable study identifies a profound connection between immune-mediated illness and our microbial population.

Childhood and beyond

Once solid food has been introduced, kids enter a whole new world of microbiome support. A diverse diet has been shown to protect against allergic disease, likely through an impact on gut flora.

Microbes thrive on fiber found in whole grains, fresh fruits, and vegetables. Overdoing it on animal protein, simple carbohydrates, and saturated fats will have the opposite effect. Fermented foods, such as yogurt, provide additional organisms to the existing colony.

Encourage healthy lifestyle habits early on. Stress has an impact on the microbiome, signaling a need to teach kids to manage fears about everything from peers to pandemics. Finally, given that exercise is a naturopathic doctor’s answer to just about any health concern, it should come as no surprise that gut bacteria respond positively to exercise as well.

Pregnancy and early childhood represent key periods when a child’s microbial community is forming. A thriving, diverse microbiome may be the most important bequest a parent can make.

Back-to-school immune support

These supplements are ideal for fall, especially as the common cold starts to make its rounds.

Vitamin D

Deficiency in this important vitamin is associated with increased rates of respiratory infections.

Probiotics

Taking a probiotic (a supplement containing strains of good bacteria) may reduce the incidence of the common cold.

Vitamin C

While vitamin C is available in many fruits and vegetables, taking a supplement may decrease the duration of the common cold in children.

Zinc

This nutrient plays a role in the prevention of pneumonia and may decrease the duration of a cold by one-third.