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Stress vs. inflammation: what your nutritionist wants you to know

Dr Gareth James

Reviewed by

Dr Gareth James MBBS, DRCOG, DFFP, MRCGP
Medical Director
Stress vs. inflammation: what your nutritionist wants you to know

Key Takeaways -

  • Chronic stress raises cortisol and other hormones that can push the immune system toward producing more inflammatory molecules
  • Stress affects the gut directly via the gut-brain axis, which can disrupt gut barrier function and worsen digestive symptoms
  • Mindfulness, sleep, gentle movement, anti-inflammatory foods and social support are all practical ways to reduce stress-driven inflammation
  • If digestive symptoms persist, it's worth checking whether a specific food is also contributing, alongside addressing stress

When we think about inflammation, most people imagine it's caused by infections, injuries, or eating too much junk food. But stress is one of the biggest hidden triggers of inflammation in the body.

Stress and inflammation can quietly work together, impacting gut health, energy levels, skin and overall wellbeing. Here's how stress fuels inflammation, and what can help.

What Is Inflammation, and Why Should You Care?

Inflammation is the body's natural response to injury or infection – think of it as the immune system's alarm system, sending healing cells to wherever repair is needed.

When inflammation persists longer than it should, it becomes chronic inflammation, which can contribute to fatigue, digestive issues, joint pain, skin problems, and increased risk of certain chronic diseases over time. Diet is a well-known driver of chronic inflammation, but it isn't the only one – stress plays a significant role too, often alongside dietary factors rather than instead of them.

How Stress Sparks Inflammation

When you're stressed, your body releases stress hormones like cortisol and adrenaline to help manage the immediate challenge – the "fight or flight" response, which is genuinely useful in short bursts.

Problems arise when stress becomes constant – work pressure, relationship strain, or ongoing health concerns can keep the body in this heightened state for far longer than it's designed for.

Over time, elevated cortisol and other stress hormones can throw the immune system off balance. Rather than calming inflammation, the body starts producing more inflammatory molecules, contributing to the kind of slow-burning, chronic inflammation many people don't realise they have.

The Gut-Brain-Inflammation Connection

Stress doesn't just affect the brain – it affects the gut too, via what's known as the gut-brain axis.

Chronic stress can disrupt the gut barrier, making it more permeable and allowing particles to pass into the bloodstream that wouldn't normally cross it, which can further fuel inflammation. Stress can also disrupt gut bacteria balance, adding to the cycle of digestive discomfort and inflammation. If digestive symptoms are a persistent issue for you, it's also worth ruling out whether a specific food is contributing – a food intolerance test can help identify that alongside addressing stress.

What You Can Do

While eliminating stress entirely isn't realistic, there are practical ways to reduce its impact and lower associated inflammation:

  • Practice mindfulness or meditation: even a few minutes a day can help calm the nervous system
  • Prioritise sleep: quality sleep plays a key role in regulating stress hormones and supporting recovery from inflammation
  • Move your body: gentle exercise like walking or yoga can help reduce both stress and inflammation
  • Eat anti-inflammatory foods: colourful fruits and vegetables, fatty fish, nuts and seeds are all worth prioritising
  • Seek support: talking to a friend, family member or professional can make a genuine difference in managing stress

Final Thought

Stress and inflammation are closely linked, and managing stress is a genuinely important part of any broader health approach. If you're experiencing fatigue, digestive discomfort or skin flare-ups, it's worth looking beyond diet alone and considering how stress might be playing a role too.

Want to learn more about managing stress and inflammation? Explore our intolerance tests or book a 1-1 nutrition consultation to start your personalised health journey.

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