9 Signs of an Unhealthy Gut (and How to Fix It)

Your gut does far more than digest food — it influences your energy, your immune system, your skin and even your mood. So when it's out of balance, the signs often show up in places you might not connect to digestion. Here are nine common signs of an unhealthy gut, and the practical steps that help.

1. Frequent bloating and gas

Regular bloating, especially after meals, is one of the most common signs your gut isn't happy — often down to trigger foods, an imbalance in gut bacteria, or sluggish digestion.

2. Irregular bowel habits

Constipation, diarrhoea, or swinging between the two can all point to a gut that's struggling. Regular, comfortable digestion is a good sign; persistent irregularity isn't.

3. Constant tiredness

Your gut helps absorb nutrients and is closely tied to sleep. Ongoing fatigue, despite resting, can sometimes trace back to gut health.

4. New food intolerances

Suddenly reacting to foods you used to handle fine can signal an imbalance in your gut. Keeping a food-and-symptom note helps you spot the pattern.

5. Frequent sugar cravings

An imbalance in gut bacteria can feed cravings for sugar and refined carbs, which in turn feed the less helpful bacteria — a cycle worth breaking gently.

6. Skin flare-ups

The gut and skin are linked, and some people notice their skin settles when their digestion does. It's not a cure-all, but the connection is real for many.

7. Getting run down often

A large share of your immune system lives in your gut, so a struggling gut can leave you catching every bug going round.

8. Low mood and brain fog

The gut-brain connection means your digestion and your mood talk to each other. Feeling foggy or flat can sometimes have a gut component.

9. Poor sleep

Gut health and sleep are a two-way street — poor sleep harms your gut bacteria, and an unsettled gut can disrupt your sleep.

How to start fixing your gut

The encouraging part: the basics work, and they're free. Focus on:

• More plants and variety — a wider range of vegetables, fruits, beans and whole grains feeds a healthier mix of gut bacteria. See the best foods for gut health.
• Fermented foods like yoghurt, kefir and sauerkraut, introduced gradually.
• Less ultra-processed food and excess sugar, which crowd out the good stuff.
• Water, movement and sleep — the unglamorous trio your gut depends on.
• Stress management, because your gut feels your stress directly.

If symptoms are persistent, severe, or worrying — ongoing pain, blood in your stool, unexplained weight loss — see a doctor rather than self-treating. These signs need proper medical attention.

A simple place to begin

You don't have to overhaul everything at once. A short, structured reset is often the easiest way to feel the difference and learn what your gut likes. That's exactly what the 30-Day Gut Reset is built for — or start free with the 7-day anti-bloat plan and see how your body responds in a week.

Frequently asked questions

How do I know if my gut is unhealthy?

Common signs include frequent bloating and gas, irregular bowel habits, fatigue, new food intolerances, sugar cravings, skin issues and low mood. A cluster of these is more telling than any one alone.

How long does it take to heal your gut?

Many people feel better within a couple of weeks of eating more gut-friendly. Building a genuinely resilient gut is a longer project measured in months of consistent habits.

Can an unhealthy gut affect your mood?

Yes — the gut and brain are closely connected, and gut health can influence mood, focus and energy for many people. It's one reason looking after your gut pays off beyond digestion.