Does Gut Health Affect Focus, Mood and Brain Function?

Difficulty focusing, mental overwhelm, emotional reactivity and persistent brain fog are often blamed on stress or personality traits.  But emerging research shows these challenges are not just brain-based – they are closely connected to gut health.

The gut and brain are in constant communication and when gut function is compromised, it can directly affect concentration, mood, energy, motivation and emotional regulation.  For many adults struggling with chronic gut symptoms alongside mental fatigue or anxiety, the gut may be the missing link.

The Gut–Brain Axis: How Your Gut Communicates With Your Brain

The gut is often referred to as the second brain because it communicates directly with the central nervous system via the gut–brain axis.  This connection works in both directions:

• The brain sends signals to the gut
• The gut sends signals back to the brain

When someone experiences chronic stress, nervous system dysregulation or emotional overload, signals from the brain can disrupt digestion, gut motility and the balance of gut bacteria.

At the same time, poor gut health can send inflammatory and disruptive signals back to the brain, contributing to symptoms such as:

• Poor concentration and focus
• Anxiety and low mood
• Irritability and emotional instability
• Fatigue and brain fog

Gut Bacteria and Brain Health: Why the Microbiome Matters

Your gut microbiome plays a vital role in brain function.  Beneficial gut bacteria are involved in producing neurotransmitters such as serotonin and dopamine, which are essential for focus, motivation, mood and emotional balance.

When gut dysbiosis (an imbalance of gut bacteria) develops, it can lead to:

• Reduced neurotransmitter production
• Increased gut and systemic inflammation
• Poor nutrient absorption
• Food sensitivities and intolerances
• Worsening focus, mood and stress resilience

Many adults with long-standing digestive issues have underlying dysbiosis without realising it.  Symptoms may include bloating, constipation, diarrhoea, reflux, skin conditions, fatigue or intense food cravings.

Gluten, Dairy and Brain Fog: Is There a Connection?

Gluten sensitivity, dairy (casein) sensitivity and coeliac disease have all been linked to changes in brain function and behaviour.  One key reason is that when the gut lining is inflamed or compromised, certain food proteins are not broken down effectively.

These partially digested proteins, known as peptides, can cross the blood–brain barrier and act in an opioid-like way in the brain.  This can contribute to symptoms such as:

• Brain fog
• Zoning out
• Fatigue
• Strong cravings for carbohydrate-rich foods

For some individuals, removing gluten or dairy (under professional guidance) can reduce inflammation, support gut healing and improve mental clarity.  However, these foods are not problematic for everyone – personalised assessment is essential.

Leaky Gut, Inflammation and Brain Function

Intestinal permeability, often referred to as leaky gut, occurs when the gut lining becomes compromised and allows unwanted particles into the bloodstream.  These may include toxins, food proteins and bacteria.

This triggers an immune response and systemic inflammation, which can extend to the brain.  Neuroinflammation is increasingly recognised as a contributing factor to:

• Mood instability
• Poor impulse control
• Emotional dysregulation
• Restlessness
• Inattention and mental fatigue

Nutrient Absorption and Cognitive Performance

When gut health is compromised, the absorption of essential nutrients often declines. Nutrients critical for brain and nervous system function, including iron, zinc, magnesium, omega-3 fatty acids and B vitamins may become deficient.

Low levels of these nutrients are strongly associated with:

• Reduced concentration
• Low energy and motivation
• Increased anxiety
• Poor stress tolerance

Addressing gut health is therefore a foundational step in supporting long-term mental clarity and emotional balance.

Supporting Focus and Calm by Healing the Gut

Because the gut and brain are constantly communicating, improving gut health can have a profound impact on focus, mood, energy and overall wellbeing.

Comprehensive gut testing can help identify imbalances such as dysbiosis, inflammation or intestinal permeability (leaky gut), allowing for a targeted and personalised approach rather than guesswork.

There is no one-size-fits-all solution.  Supporting the gut, nervous system and nutrition together is often the key to lasting change.

If you’d like to get to the bottom (excuse the pun!) of your gut health and ongoing focus or mood challenges, you’re welcome to book a free Zoom/chat with Sal to explore this further. 

Alternatively, the Mind Your Gut Program can be purchased HERE.

Hidden Toxins – Heavy Metals & Your Health

When we think of toxins, we often picture processed foods or pollution but one of the biggest hidden threats to our health is heavy metal toxicity.  Despite being rarely discussed, heavy metals can silently build up in the body and cause a wide range of physical and mental health problems.

What Are Heavy Metals and Where Do They Come From?

Heavy metals such as lead, mercury, arsenic, cadmium and aluminium are naturally occurring elements found in the earth’s crust.  In small amounts, they can be harmless, but modern living has drastically increased our exposure through industrial pollution, contaminated food and water, personal and household products.

You may be unknowingly exposed to heavy metals through:

• Large fish like tuna, swordfish and king mackerel (high in mercury)
• Pesticide residues and herbicides on fruits and vegetables
• Processed and fortified foods
• Pharmaceutical residues
• Air pollution and cigarette smoke
• Tap water running through copper or lead pipes
• Cleaning agents, cosmetics, perfumes and household furnishings
• Occupational exposure (e.g. mining, manufacturing, welding)

How Heavy Metals Affect the Body

Heavy metals act like silent invaders, gradually accumulating in tissues and organs where they trigger oxidative stress and inflammation.  Over time, this can disrupt the body’s natural balance and lead to chronic symptoms that are often misdiagnosed or overlooked.

How Do You Know If You Have Heavy Metals In Your Body?

• Organ damage: Metals accumulate in the liver, kidneys and brain, impairing detoxification and increasing disease risk.
• Immune dysfunction: Heavy metals weaken immune defences, making the body more prone to infections, allergies and autoimmune reactions.
• Cardiovascular stress: They can harden arteries, raise blood pressure and increase the risk of heart disease.
• Respiratory issues: Inhaled metals such as cadmium can cause lung irritation, chronic bronchitis or asthma.

The Hidden Link Between Heavy Metals and the Brain

Our brains are especially sensitive to heavy metals because of their ability to cross the blood-brain barrier. Once inside, they can alter brain chemistry and interfere with neurotransmitters that regulate mood, memory, and focus.

How Do You Know If You Have Heavy Metals In Your Brain?

• Nervous system disruption: Lead and mercury are particularly harmful to the brain and nervous system, contributing to trouble concentrating, memory loss, brain fog, poor focus, hyperactivity and neurodegenerative conditions like Parkinson’s and Alzheimer’s.
• Mood disorders: Anxiety, depression, irritability and mood swings due to disrupted neurotransmitter balance.
• Developmental issues: Children and unborn babies are most at risk.  Even low-level exposure can cause learning difficulties and behavioural challenges.
• Sleep disturbances: Metals like mercury can affect melatonin production, leading to insomnia and poor quality sleep.

Supporting Detoxification Naturally

While heavy metal toxicity can sound overwhelming, there are safe and effective ways to reduce your exposure and support the body’s natural detox pathways.

Limit exposure:
Avoid high-mercury fish, choose organic produce when possible, filter your water and use non-toxic cleaning and personal care products.

Support detox organs:
A healthy liver and gut are essential for detoxification. Eat a diet rich in colourful vegetables, fibre and antioxidants.  Foods like coriander, garlic and cruciferous vegetables (broccoli, kale, cauliflower) can help bind and eliminate toxins.

Boost key nutrients:
Zinc, selenium, magnesium and vitamin C play vital roles in neutralising free radicals and supporting detox enzymes.

Consider testing:
If you suspect heavy metal exposure, a Hair Tissue Mineral Analysis (HTMA) can provide valuable insight into your body’s mineral balance and toxicity levels.

Book a free 20 minute call or Zoom to learn more or find out how testing can help you or book an Initial Consultation to get started on your health journey.

A ‘Healthy Diet’ May Harm Your Gut

We’ve all heard the phrase “eat more greens” but for one of my clients, that well-intentioned advice was making her gut health worse.

When Sarah (not her real name) first came to see me, she was at her wit’s end.  She had bloating, cramping and constant abdominal pain that seemed to appear no matter what she ate.  She’d done all the right things: cut out processed foods, avoided sugar and gluten and filled her plate with vegetables.

Every day for lunch, she proudly ate what she called her ‘super clean kale salad’ – raw kale, cabbage, nuts and olive oil.  It looked healthy but her gut was struggling.

Why Was Her ‘Healthy’ Diet Making Her Feel Worse?

From the outside, Sarah’s diet looked perfect but after assessing her gut symptoms, food diary and health history, I suspected her gut lining was inflamed and her digestive enzyme function was low.  This meant her body was struggling to break down the tough, fibrous vegetables she was eating in large amounts.

Kale and raw cruciferous vegetables like cabbage are high in insoluble fibre and oxalates.  While these can benefit a healthy gut, for someone with gut inflammation or a compromised microbiome, they can act like sandpaper on an already irritated gut lining.  Instead of healing her digestion, Sarah’s ‘superfood salad’ was keeping her stuck in a cycle of bloating and pain and her gut inflammation was getting worse.

What the Gut Test Revealed

We decided to investigate further using the Microbiome Explorer Gut Test.  The results showed she was low in Oxalobacter formigenes – a beneficial bacteria that breaks down oxalates.  Without enough of these bacteria, Sarah couldn’t properly digest high-oxalate foods such as spinach, kale, nuts and even chocolate.

The results also showed that she had an inflamed gut and there were signs of a ‘leaky gut’.  She also had low Bifidobacterium – a beneficial gut bacteria that protects against inflammation by strengthening the gut barrier.

A Gentler Gut-Healing Approach

We took a gentler approach and focused on reducing inflammation and supporting digestion.  Sarah swapped her raw salads for cooked, easy-to-digest vegetables like:

• Steamed zucchini
• Roasted carrots
• Pumpkin
• Peeled sweet potato

These vegetables are low in oxalates and provide soluble fibre, which feeds good gut bacteria and helps soothe the digestive tract.

Within just a few weeks, Sarah’s bloating reduced significantly.  After three months, her pain levels were down by 80%, her energy improved and she no longer dreaded eating.

Personalising Nutrition for Gut Health

To dig deeper, we ran a food reactivity test which identified a few trigger foods.  Once we temporarily removed those foods and added targeted foods and nutritional supplements for gut healing, her digestion settled even further.

Sarah’s story is a reminder that healthy eating is not a one-size-fits-all.  What’s good for one person can be inflammatory for another, especially if the gut microbiome is imbalanced.

Raw salads, green smoothies and high-fibre foods are often praised as the gold standard of nutrition.  But when the gut is inflamed, it needs calm, not chaos.  Cooked foods, gentle fibre and a personalised nutrition plan can help the gut repair and restore balance.

Are You Eating ‘Healthy’ But Still Feel Crap?

If you’re eating all the ‘right’ foods but still feeling bloated, fatigued or uncomfortable after meals, your gut may be asking for a different approach.  Your body might need nourishment that supports where your gut health is right now – not where you want it to be.

If this sounds like you, it might be time to investigate your gut health further.  The HairSense Nutrition Analysis Test or a Microbiome Explorer test can help uncover hidden imbalances, food sensitivities and guide you toward a plan that truly supports your digestion.

You can book an Initial Consultation with Sal here.

Choosing Between Keto, Fasting, Carnivore, Vegan?

With so many popular diets promising better energy, weight loss or improved health, it can be hard to know which one actually works – or if they’re right for you.  The keto, intermittent fasting (IF), carnivore and vegan diets are among the most talked-about eating styles today.  Each has its own benefits, potential drawbacks and ideal audience. Understanding the pros and cons of these diets can help you make an informed choice that supports your body, lifestyle and long-term wellbeing.

Keto Diet

The ketogenic diet is a very low-carb, high-fat approach that pushes the body into ketosis, where fat becomes the main fuel source instead of glucose.

Pros: Many people experience fast weight loss, reduced sugar cravings and better blood sugar balance.  It may also enhance focus and energy stability.

Cons: It can be difficult to sustain and may lead to nutrient deficiencies if plant foods are limited.  Common side effects include fatigue, constipation and ‘keto flu’ in the early stages.

Intermittent Fasting (IF)

Intermittent fasting alternates between eating and fasting windows, such as the 16:8 or 5:2 methods.

Pros: IF can support healthy weight management, improve insulin sensitivity and promote cellular repair.  It’s flexible and doesn’t require strict food rules.

Cons: It’s not ideal for everyone particularly those with blood sugar issues, adrenal fatigue, anxiety or disordered eating patterns.  Over-fasting can trigger irritability, fatigue or overeating.

Carnivore Diet

This ultra-low-carb diet consists entirely of animal foods – meat, fish, eggs and sometimes dairy.

Pros: Some people find it reduces bloating and digestive discomfort by removing common food triggers.  It can also help stabilise blood sugar levels.

Cons: It’s extremely restrictive and can cause deficiencies in fibre, vitamins and antioxidants.  You initially feel great but inflammation in the gut can occur long term which ultimately end in nasty gut problems.

Vegan Diet

A vegan diet excludes all animal products and focuses on plant-based foods.

Pros: It’s rich in fibre, antioxidants and phytonutrients if done correctly.  It supports gut health and reduces inflammation.  It’s also environmentally sustainable.

Cons: It requires careful planning to avoid deficiencies in vitamin B12, iron, zinc and omega-3s.  Highly processed vegan foods can also offset its health benefits.

Final Thoughts

Ultimately, there’s no one-size-fits-all diet.  The best approach is one that nourishes your body, supports your energy and mood and is sustainable long term.

From a personal perspective, I don’t like the word ‘diet’.  My philosophy is a ‘way of eating for life’ and the 80/20 rule when a person is reasonably healthy.  In clinic, clients would initially eat differently to improve their symptoms.  They follow the food sensitivity results from the HairSense Nutrition Analysis Test for 4 – 6 months.  This is a good period of time to see long lasting results.

What’s the Difference Between a Clinical Nutritionist and a Dietitian?

If you’ve ever tried to get to the bottom of your gut issues, hormonal imbalances, struggles with energy and focus and weight loss, chances are you’ve likely come across both Clinical Nutritionists and Dietitians.  They seem to do the same thing, don’t they?  They offer dietary advice and nutrition plans – but there are some important differences in their training, philosophy and approach.

Understanding these differences can help you choose the right professional for your unique health goals.

Education and Regulation

In Australia, Dietitians complete an accredited university degree in nutrition and dietetics, usually taking around four years.  This qualification allows them to work in hospitals, community health, aged care and private practice.

Dietitians are also eligible to register with Dietitians Australia as Accredited Practising Dietitians (APDs).  This means that they can work alongside doctors and other health professionals to provide dietary treatment for diagnosed medical conditions such as diabetes, kidney disease, food allergies and gastrointestinal disorders.

Because of this accreditation, APDs can access Medicare, Department of Veterans’ Affairs and private health rebates, making their services partially covered for many clients.

Clinical Nutritionists on the other hand, also complete tertiary-level qualifications, typically a Bachelor of Health Science (Nutritional Medicine or Clinical Nutrition) or equivalent advanced diploma.  Their training covers anatomy, physiology, biochemistry, nutritional science and how food and lifestyle influence the body’s systems.

Unlike Dietitians, Clinical Nutritionists are not yet eligible for Medicare rebates. However, they are often registered with professional associations such as the Australian Natural Therapists Association (ANTA) or Australian Traditional Medicine Society (ATMS), which uphold professional and ethical standards within the field.  They can also access some private health rebates.

Different Approaches to Health

While both professions are evidence-based, their philosophy and approach to care can differ significantly.

Dietitians often work within the medical model.  Their focus is on using diet as a treatment for specific diagnosed conditions.  For example, they might develop meal plans for someone managing high cholesterol, Coeliac Disease or obesity.  Their recommendations are typically based on government dietary guidelines and are designed to improve health outcomes within a clinical or hospital setting.  They might not recommend healthy whole foods.

Clinical Nutritionists take a more functional and holistic approach.  Rather than just addressing symptoms, they aim to uncover the root causes of health issues rather than just a ‘band aid’ approach.  For instance, if a client is experiencing fatigue or low mood, a Clinical Nutritionist may look beyond diet to explore gut health, nutrient deficiencies, stress, sleep quality and hormone balance.

Their goal is to identify what’s driving the imbalance whether it’s poor digestion, inflammation or nutrient depletion.  They then create a personalized nutrition and lifestyle plan to restore balance and optimize wellbeing.  Healthy whole foods are usually recommended in the plan. 

Areas of Specialization

Dietitians are commonly found in hospital and clinical environments, working with acute or chronic diseases.  They may also work in aged care, food service or public health roles.

Clinical Nutritionists typically work in private practice and often specialise in areas like:

• Gut health and digestive disorders (eg IBS, IBD, bloating, constipation)
• Hormonal balance and perimenopause/menopause
• Mental health and the gut-brain connection
• ADHD, focus and mood regulation
• Fatigue, stress and adrenal health

Because of their functional approach, Clinical Nutritionists often use pathology testing, microbiome analysis and personalized supplement protocols alongside dietary strategies to support long-term healing.

Which One Is Right for You?

Both Dietitians and Clinical Nutritionists are highly trained professionals who use food as medicine.  They simply approach it in different ways.

If you have a diagnosed medical condition and need structured dietary advice that’s recognised by Medicare or a GP, a Dietitian may be the best fit.

If you’re looking for a holistic, investigative approach that looks beyond symptoms and focuses on the connection between your gut, hormones, brain and lifestyle, a Clinical Nutritionist could be exactly what you need.

At the end of the day, both play valuable roles in supporting better health.  The key is finding a practitioner whose philosophy aligns with your personal goals and who helps you feel understood, supported and empowered to take charge of your wellbeing.

If you’d like to find out how Sal, a Clinical Nutritionist may be able to help you, why not book a free 20 min call or Zoom here.