5 Signs Your Gut Microbiome Needs Support
By Lauren Marshall, Women's Health Naturopath
Your gut microbiome is made up of trillions of bacteria, fungi, and other microorganisms living in your digestive tract. When it's thriving, you feel it: good energy, clear skin, easy digestion, and a stable mood. When it's out of balance, that shows up too, often in ways that seem completely unrelated to your gut.
Here are five signs your microbiome may be asking for support.
1. You're Bloating Regularly
Occasional bloating after a big meal is normal. But if you're bloating most days, especially after meals that don't seem particularly heavy, it's worth paying attention.
Bloating is one of the most common signs of dysbiosis, an imbalance between the beneficial and harmful bacteria in your gut. When harmful bacteria ferment food in ways they shouldn't, gas builds up, leading to that uncomfortable fullness and distension after eating.
Other digestive signs to watch for include burping, reflux, irregular bowel movements, or alternating constipation and loose stools. These are all signals that your gut environment needs attention.
2. Your Skin Is Breaking Out
Skin that is persistently congested, inflamed, or prone to acne, particularly around the chin and jawline, is often connected to what's happening in the gut. This relationship is known as the gut-skin axis.
When the gut lining becomes permeable (commonly called leaky gut), inflammatory particles enter the bloodstream and trigger systemic inflammation. This shows up on the skin as acne, redness, eczema, or rosacea.
If you've tried topical skincare and your skin still isn't improving, the gut is often the missing piece.
3. You're Tired Despite Sleeping Enough
Fatigue is one of the most overlooked signs of poor gut health. Around 90% of your body's serotonin is produced in the gut, and serotonin is a precursor to melatonin, the hormone that regulates your sleep-wake cycle. When your microbiome is imbalanced, serotonin production is affected, and sleep quality suffers even when you're getting enough hours.
Poor gut health also impairs nutrient absorption. Even if you're eating well, an imbalanced microbiome can reduce your ability to absorb key nutrients like iron, B12, and magnesium, all of which are essential for energy.
4. You're Experiencing Mood Changes or Anxiety
The gut and brain are connected via the gut-brain axis, a two-way communication network that runs through the vagus nerve. Your microbiome plays a direct role in regulating mood, stress responses, and mental clarity.
Research consistently shows that people with anxiety, low mood, and brain fog often have measurably different gut microbiomes compared to those without these symptoms. Certain bacteria produce calming neurotransmitters like GABA and serotonin. When those bacteria are depleted, mood stability is affected.
If your mood shifts significantly around your menstrual cycle, this gut-hormone-brain connection is especially worth exploring.
5. You Get Sick Often or Take a Long Time to Recover
Around 70% of your immune system lives in your gut. A healthy, diverse microbiome trains your immune cells, regulates inflammation, and acts as a physical barrier against pathogens. When your microbiome is imbalanced, your immune system becomes less effective.
Frequent colds, slow recovery from illness, or a general sense that you're always run down can all point to a gut that needs support. Autoimmune conditions and persistent low-grade inflammation are also closely linked to gut health.
What To Do Next
If you recognise yourself in more than one of these signs, your gut microbiome is worth investigating. A good starting point is increasing the diversity of plant foods in your diet, adding a daily fermented food, reducing processed foods and sugar, and managing stress consistently.
For a more targeted approach, a comprehensive gut microbiome test can identify exactly what's out of balance, so your support plan is specific to you rather than generic.
Ready to support your gut health?
Download my free guide Nourishing Your Gut for practical daily steps to start feeling better from the inside out.
Lauren Marshall is a Women's Health Naturopath supporting women across Australia with gut health, hormonal imbalances, skin conditions, and fertility. To find out whether naturopathic support is right for you, book a free 15-minute discovery call HERE.