Microbiome Inheritance:
Passing Down
More Than DNA

When we think about what parents pass down to their children, our minds go straight to eye colour, hair texture, or height. But science is revealing a lesser-known inheritance that may play an even bigger role in lifelong wellbeing: the microbiome. This vast, bustling ecosystem of bacteria, fungi, and other microbes lives on our skin and in nearly every corner of the digestive tract. And it turns out that, just like genes, our microbes are passed from one generation to the next, shaping immunity, mood, metabolism, and resilience from day one.

Your First Family Heirloom: The Maternal Microbiome

A baby’s microbiome begins forming during pregnancy. While the womb was once believed to be sterile, emerging research has found that a mother’s microbial health influences the developing immune system. The microbes in her gut, mouth, and vaginal canal all play a role in “training” the baby’s immune defences and preparing their body for life outside.

During birth, a newborn receives their first major microbial download. Babies born vaginally are coated and colonised by their mother’s bacteria — especially species that support immunity and digestion. In contrast, babies born via C-section tend to have different early microbial patterns, which researchers believe is one reason C-section birth has been linked to a slightly higher risk of allergies, eczema, and asthma later in childhood. (This does not mean C-section birth is unhealthy — simply that early microbial exposure differs, and can be supported in other ways.)

Feeding the New Microbiome

Around 70% of the immune system resides in the gut. From the first weeks of life, a diverse microbiome teaches immune cells to distinguish between “friend” and “foe.” Children with richer microbial diversity tend to have lower rates of inflammatory and allergic conditions — while children who grow up in ultra-sterile environments or who have frequent early antibiotic exposure may be more prone to immune reactivity.

This is where natural parenting practices shine. Microbial inheritance isn’t only biological — it’s environmental. Your child’s microbiome continues to develop for the first two to three years of life, influenced by everyday experiences.

How to Support a Healthy Generational Microbiome

For expectant and new parents:

• Eat a fibre-rich, whole-food diet to nourish beneficial bacteria
• Prioritise fermented foods (like yoghurt, kefir, and sauerkraut)
• Avoid unnecessary antibiotics (while using them when medically needed)
• Embrace skin-to-skin contact and time outdoors
• Allow safe, natural “dirt exposure” — microbes thrive in nature

For growing kids:

• Offer colourful, plant-based meals — diversity matters for microbes
• Reduce ultra-processed snacks that disrupt gut balance
• Encourage play in grass, soil, and sand
• Focus on good sleep — the microbiome has a circadian rhythm too

More Than DNA

Microbiome inheritance reminds us of something profound: we are ecosystems, not individuals. By caring for our own microbial health, we influence not only our wellbeing, but our children’s too. It’s one of the most meaningful forms of legacy — and one we can nurture with every bite, breath, and barefoot step on the earth

Restore

Microbiome inheritance reminds us of something profound: we are ecosystems, not individuals. By caring for our own microbial health, we influence not only our wellbeing, but our children’s too. It’s one of the most meaningful forms of legacy — and one we can nurture with every bite, breath, and barefoot step on the earth.