How Chewing and Breathing Shape Your Child’s Brain
We all know that eating and breathing are essential for life. But emerging research shows that the way children chew (mastication) and breathe — especially nasal breathing — may play a much bigger role in how their brains develop and function than most of us realized.
The “Mastication–Respiration Axis”: What Is It?
Researchers describe a functional connection between chewing, breathing, and brain activity — calling this the mastication–respiration axis. Think of it as a teamwork system where how kids chew and breathe sends rhythmic signals to parts of the brain that are important for memory, thinking, and movement.
Why Nasal Breathing Matters
Nasal breathing — breathing through the nose — isn’t just about getting air in; it entrains neural rhythms (helps set timing patterns) in brain regions tied to cognition like memory and focus. When children habitually mouth breathe, this rhythm can be disrupted, potentially affecting attention, memory, and motor skills.
Chewing Isn’t Just for Eating
The review highlights evidence from animal studies showing that reduced chewing leads to decreases in hippocampal neurogenesis (new brain cell growth in an area critical for learning) and worse memory performance. Encouraging meaningful chewing — through appropriate textures and foods — may actually help stimulate the brain.
Timing Matters: Early Developmental Windows
This connection between chewing, breathing, and brain function appears especially important during early development. When the brain is rapidly forming pathways, disruptions in nasal breathing or chewing activity may contribute to long-lasting effects on memory, motor control, and emotional regulation.
What You Can Do as a Parent
Here are some practical, gentle ways to support your child’s chewing and breathing habits:
Support Nasal Breathing
Keep nasal passages clear (allergy management, gentle saline rinses).
See a specialist if mouth breathing persists.
Encourage Chewing
Offer age-appropriate foods with texture (soft-cooked veggies, fruits, lean meats when safe for age).
Avoid relying solely on smoothies or very soft/dpureed diets long-term.
Notice Patterns
Does your child frequently breathe through their mouth at rest?
Do they avoid chewing textured foods?
Mention these observations to your pediatrician, occupational therapist, or feeding specialist.
Early Support Matters
Habits around chewing and breathing are not just about eating — they may play a role in overall brain development and cognitive health.
Bottom Line
Chewing and breathing are deeply connected to how the brain develops and functions. Supporting nasal breathing and encouraging developmentally appropriate chewing can be simple shifts with meaningful benefits for your child’s learning, focus, and overall neurological wellbeing.
Full Article Citation
Hosomichi, J. & Ono, T. (2026). A functional axis of mastication and respiration in cognitive function: A narrative review. Archives of Oral Biology, 184, Article 106517. https://doi.org/10.1016/j.archoralbio.2026.106517