Getting Sick Often? 80% of Your Immune System Lives in Your Gut
- Get better with Ellie

- Apr 17
- 3 min read

I'm not being dramatic when I say this.
At 25 years old I genuinely thought something was seriously wrong with me.
Constant infections. No energy. Skin breaking out. Hair falling out. Heart racing at 2am. A body that felt like it was fighting itself every single day.
I went to every doctor. Had every test.
And every single time I was told the same thing.
"Everything looks normal."
Normal. I was falling apart and apparently that was just normal.
What nobody told me — what took me years of research, studying and lived experience to figure out — was that almost everything I was experiencing traced back to one place.
My gut.
What Most People Don't Know About Their Immune System
80% of your immune system lives in your gut.
Not in your throat. Not in your chest. In your gut.
Your gut lining is home to trillions of bacteria, immune cells and nerve endings that are constantly communicating with the rest of your body — deciding what to fight, what to tolerate and what to let through.
When your gut is healthy, your immune system is strong, regulated and responsive.
When your gut is damaged, inflamed or out of balance — your immune system is compromised. And everything suffers.
Your energy. Your skin. Your mood. Your hormones. Your ability to fight off even the most basic infections.
All of it connects back to what's happening in your gut.
Facts Worth Knowing
Most people are surprised to learn just how central the gut is to overall health.
Here are a few facts that tend to change how people think:
Your gut microbiome contains over 100 trillion bacteria — more bacterial cells than human cells in your entire body. This community of microorganisms is responsible for far more than digestion. It regulates immune function, produces neurotransmitters, manages inflammation and communicates directly with your brain.
A damaged gut lining — commonly known as leaky gut — allows toxins and undigested food particles to pass into the bloodstream. This triggers system wide inflammation that can show up as skin issues, joint pain, brain fog, fatigue, hormonal imbalance and a weakened immune response.
Antibiotics wipe out good gut bacteria for up to two years after a single course. While antibiotics are sometimes necessary, the impact on the microbiome is significant and rarely addressed by conventional medicine.
Chronic stress, poor sleep and ultra processed food are the three biggest destroyers of gut health — and therefore immune function. These three factors alone can explain why so many people feel consistently run down despite trying to eat reasonably well.

What Healing the Gut Actually Looks Like
When I finally started healing my gut everything changed.
The infections stopped. The energy came back. The skin cleared. The heart palpitations disappeared.
Not because I found a magic supplement or followed a perfect diet.
Because I finally understood that the gut is the foundation of everything, and I started treating it that way.
This is where I start with every single client I work with. Before we talk about anything else, (hormones, weight, energy, anxiety) we look at the gut. Because when the foundation is strong, everything else becomes significantly easier to address.
Signs Your Gut Health Might Be Affecting Your Immunity
Not sure if your gut is playing a role in how you feel? Here are some signs worth paying attention to:
You get sick frequently or take a long time to recover. You feel constantly tired even after a full night of sleep. You experience regular bloating, discomfort or digestive issues. Your skin is breaking out or feels reactive. Your mood is low or your anxiety has increased. You have brain fog or difficulty concentrating.
Any one of these on its own could have multiple causes. But when several show up together, the gut is almost always involved.
Where to Start
The good news is that your gut is incredibly responsive when you give it the right support.
Small, consistent changes to what you eat, how you manage stress and how you support your digestive system can shift things significantly within weeks.
If you want a simple, practical starting point — I've put together a free Mini Gut Health Reset that walks you through exactly where to begin.
No overwhelm. No extreme protocols. Just the foundations your gut actually needs to start functioning the way it was designed to.
Can't wait to connect,
Ellie xx
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