Bloated? Stressed? Activating Your Vagus Nerve Can Improve Gut Health Fast

We often think about different areas of our body as largely unrelated to one another.Your arm hurts and you assume you carried in a few too many groceries last night. Your eyes feel strained and you reflect on your computer use over the past week. But a nerve that starts in your brainstem couldn’t possibly be connected to your gut health and vice versa…right? Not quite. If you’ve ever felt your stomach drop before a big presentation or noticed bloating gets worse when you’re stressed, you’ve likely experienced the connection between the vagus nerve and gut health. We asked two experts to explain this fascinating link and share simple ways you can tap into it to help ease everything from stress to stubborn digestive issues.

What is the vagus nerve?

Rab Nawaz, MD, a board-certified neurologist, explains that the vagus nerve is one of the main communication lines between the body and the brain. It plays a key role in important automatic bodily functions such as breathing, digestion, heart rate, immune responses and swallowing.

“I often describe it as part of the body’s ‘calm and recovery’ system because it helps shift the body away from high-alert stress mode and toward rest, digestion and repair,” adds Dr. Nawaz.

How the vagus nerve and gut health are connected

When you think about your gut, you probably focus on the food you consume and how they either soothe or upset your gastrointestinal tract. But here’s why you should be thinking about the vagus nerve too.

The vagus nerve sends signals back and forth between the brain and the gut (part of your gut-brain axis), meaning stress levels, digestion, mood, inflammation and movement within the gut can all influence one another, explains Dr. Nawaz. “The gut and brain are constantly talking, and the vagus nerve is one of the main phone lines between them,” he adds.

Can improving gut health activate the vagus nerve?

Before we dive into the gut’s role in activating vagus nerve cells, let’s start with what the buzzy health term is actually referring to. “Gut health refers to how well the digestive system is working as a whole,” says Dr. Nawaz. “That includes regular digestion, comfortable bowel movements, a strong gut lining, balanced immune system and a healthy microbiome.”

Dr. Nawaz cautions against thinking of improving your gut health as flipping a switch that suddenly turns on the vagus nerve, but he says a healthier gut can absolutely help send steadier signals to the brain.

Claire Brandon, MD, integrative and gastrointestinal psychiatrist, adds that certain “good” gut bacteria may also support healthier vagus nerve communication. Some beneficial strains of bacteria linked to anti-anxiety and antidepressant effects appear to work best when the vagus nerve connection between the gut and brain is functioning properly, she notes.

Can activating the vagus nerve improve gut health?

Good news: The benefits of the vagus nerve and gut health connection work both ways! “Activating the vagus nerve may help digestion by encouraging the body’s ‘rest and digest’ state,” says Dr. Nawaz. “That can support stomach and intestinal movement, digestive secretions and a calmer stress response. This is why slow breathing before meals may help some people who notice stress-related bloating, cramping or indigestion.”

Although activating your vagus nerve will not improve every gut condition, it can still be helpful, especially for people who notice stress worsens their digestive symptoms, adds Dr. Nawaz.

3 tips to activate your vagus nerve

When it comes to boosting your gut health to nourish your vagus nerve, focusing on fermented foods like kefir, kimchi and sauerkraut. But aside from making diet tweaks, there are plenty of other natural ways to stimulate your vagus nerve. Some easy options our experts recommend:

Splash cold water

Dr. Brandon says using a cold stimulus on your face, whether that’s a cold pack or simply splashing cold water on your skin , can activate a vagus nerve brainstem pathway called the trigeminal-brainstem-vagal reflex arc. She adds this may help lower heart rate, increase heart rate variability (HRV) and reduce cortisol and stress levels.

Try diaphragmatic breathing

Slow, deep breathing from the diaphragm is one of the most researched at-home ways to stimulate the vagus nerve and support the body’s parasympathetic “rest and digest” state, explains Dr. Brandon. She adds that studies have shown that even brief breathing sessions lasting just two to five minutes may help increase relaxation responses in the body.

Hum

Dr. Nawaz says humming and gentle singing may also help stimulate the vagus nerve because some of its branches are connected to the throat and voice box. He explains that slow vocal vibrations paired with controlled breathing may help encourage relaxation, and that even 30 to 60 seconds can make a difference.

The bottom line on the vagus nerve and gut health

If your gut health has felt off no matter how many prebiotic- and probiotic-rich foods you eat, or you constantly feel stuck in fight-or-flight mode, tapping into the link between your vagus nerve and gut health could be the missing piece you’ve been looking for. This is a reminder that the body works best when we care for all of its interconnected systems, even the ones we may not realize affect one another.

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This story was originally published May 20, 2026 at 4:00 PM.