Posted on: June 2, 2026
Ever notice that your stomach suddenly acts up during stressful weeks?
Maybe your bloating gets worse during busy seasons at work.
Maybe your stomach aches show up before big events.
Maybe your digestion completely changes when life feels overwhelming.
If you’ve ever wondered whether stress can affect your gut, the answer is yes. Absolutely. As Dr. Lara Spector, Naturopathic Doctor, often explains, the connection between stress and digestion is much stronger than many people realize. Your brain and gut are constantly communicating with each other through what we call the gut-brain axis.
When stress increases, your gut feels it too. When your body experiences stress, your brain releases a hormone called cortisol releasing factor (CRF). This hormone is produced in response to physical stress, emotional stress, lack of sleep, illness, overwork, and even ongoing mental load. The interesting part is that your digestive tract actually has receptors for this stress hormone. When stress becomes chronic and CRF levels remain elevated, several things can start happening inside the gut.
One major change is a reduction in protective mucus production within the digestive tract. This mucus layer is important because it acts like a protective barrier between your gut lining and everything moving through your digestive system. When that protection decreases, unwanted bacteria can become more embedded within the gut lining. Over time, this can contribute to increased intestinal permeability, sometimes called "leaky gut," where the barrier between the gut and bloodstream becomes more permeable than we would like. Stress can also change your microbiome. Research shows chronic stress may decrease microbiome diversity, which can contribute to dysbiosis, or an imbalance between beneficial and less helpful bacteria living in the gut.
This combination of increased intestinal permeability and microbiome disruption is one reason why stress can show up as:
• Stomach aches
• Bloating
• IBS symptoms
• Changes in bowel movements
• Increased food sensitivities
• Nausea
• Reflux
• Abdominal discomfort
• Feeling like your digestion suddenly changed for "no reason"
The frustrating part is that many people then focus only on treating the digestive symptoms while completely missing the stress component. So what can we do?
The good news is that supporting stress does not mean you have to quit your job, move to the mountains, or meditate for three hours a day. Dr. Lara Spector, Naturopathic Doctor, often talks about supporting both sides of the equation: reducing stress load while also supporting the gut itself.
Some strategies that can help include:
Stress management and lifestyle changes
This might look like improving sleep quality, building recovery time into your schedule, movement that feels good, therapy, nervous system support practices, or simply identifying where your body is constantly running on empty.
Herbal medicine and supplement support .
Certain supplements and herbs may help support stress resilience while others can help support gut repair and digestive function. The right approach depends heavily on the individual.
Nutrition and eating habits .
A whole foods diet rich in plants, fibre, and nutrient dense foods can support the microbiome. Equally important is how we eat.
Eating quickly, eating while stressed, or eating while distracted may keep the body in a fight or flight state when we actually want digestion to occur in a rest and digest state.
Sometimes the first step toward improving gut health is simply helping your nervous system feel safe enough to digest properly. If your stomach seems to flare when life feels overwhelming, your body might not be overreacting. It might simply be communicating.
Have questions about stress, digestion, bloating, IBS symptoms, or how your gut and nervous system interact? Reach out.
-Dr. Lara Spector Naturopathic Doctor I Toronto, Ontario