Stress & The Gut – Why That “Butterfly” Feeling Happens

With HCPC renewal approaching, some UK registered dietitians will soon receive the email inviting them to submit a CPD audit.

Even the most organised professional can have a brief moment of “Wait… two years of CPD? Where do I even start?”

That initial surge of stress is a classic fight-or-flight response. When we perceive pressure or uncertainty, our nervous system shifts into alert mode. Heart rate rises, breathing changes, and interestingly the gut often reacts too.

Why? Because the gut and brain are in constant two-way communication through the vagus nerve. This is part of what’s known as the gut–brain axis. It’s the same pathway responsible for that pre-interview “butterfly” sensation, sudden bloating before a presentation, or stomach cramps when we’re anxious.

The gut isn’t just reacting to food — it’s responding to emotion, workload, and perceived threat. In evolutionary terms, this system was designed to keep us safe. In modern life, it tends to activate for inbox notifications rather than predators!

So what can help when stress shows up physically?

• Slow, diaphragmatic breathing to stimulate the vagus nerve
• Stepping away briefly to reset perspective
• Breaking large tasks into small, manageable steps
• Gentle movement or a short walk
• Adequate sleep and regular meals to keep the nervous system steady

Awareness alone can be powerful recognising “this is stress, not danger” often reduces the intensity of physical symptoms. For any dietitians currently feeling those CPD-audit butterflies… remember, support and structured tools exist here sometimes the quickest way to calm the gut is simply knowing you have a clear plan in front of you.
​And breathe....