12 Calming Foods for the Vagus Nerve Diet That Reset Your Stress Response

3. Blueberries

Blueberries are rich in polyphenols and antioxidants that support brain health and reduce oxidative stress, which plays a role in how our bodies process stress signals. Adding a cup of blueberries to breakfast or snacks delivers concentrated phytonutrients that research links to clearer thinking and mood benefits. Frozen berries are a convenient option and retain much of their nutritional value. Small daily habits, like stirring berries into yogurt or oatmeal, make it easier to get consistent antioxidant support that helps the nervous system stay balanced.

4. Green Tea

Green tea contains L‑theanine, an amino acid shown to promote relaxation without sedation by supporting alpha brain waves and moderating stress-related responses. Sipping warm green tea can be calming in the moment, and choosing matcha provides a more concentrated source of L‑theanine for people who tolerate caffeine. If caffeine makes you jittery, opt for lower-caffeine steep times or decaffeinated green tea extracts with guidance from a healthcare provider. Incorporating ritual — slow brewing and mindful sipping — enhances the calming benefit beyond the compounds in the cup.