Why the Vagus Nerve Matters in Pregnancy — and How to Support It

Most of us think of pregnancy in terms of hormones, scans and growing bellies — but there’s another biological system quietly shaping how your body adapts, responds to stress, and even how you feel emotionally: the vagus nerve.

The vagus nerve — also called cranial nerve X — is the longest and one of the most important parts of the parasympathetic nervous system. It acts as a major communication highway between your brain and your organs, including the heart, lungs, and digestive system. It helps regulate involuntary functions such as heart rate, breathing, digestion, inflammation, and immune responses.