How to boost your gut health and immune system

A healthy gut is key for overall health, and affects so much more than your digestion. With links to mental health, heart health, sleep, skin conditions and more, it’s no wonder the gut is often referred to as our ‘second brain’.

And did you know the health of your gut can also have a big impact on your immune function?

“Around 70 per cent of your immune system is actually located in your gastrointestinal tract,” says nutritionist Corin Sadler. “This means they are very closely linked and, in many ways, one and the same.

“So a healthy gut, filled with diverse bacteria, can be our best weapon in fighting off illnesses.”

So, what can you do to help keep your gut in good shape?

1. Get more fibre in your diet

“A diet that’s high in fibre is key for good gut function,” says Ms Sadler. “Fibre helps with our digestion and supports a healthy gut microbiome, as it ‘feeds’ our good bacteria to help it thrive.”

Most Australians do not consume enough fibre. On average, we consume 20-25g of fibre daily, but the Heart Foundation recommends adults should aim to consume approximately 25-30g daily.

To boost your fibre intake, Ms Sadler recommends adding a diverse range of plant-based sources to your daily menu, such as different fruits, vegetables, beans and pulses, as well as healthy cereals, wholegrain bread, pasta and brown rice. Keep things interesting and diverse by mixing up your high fibre foods each day. Look for foods containing high levels of prebiotic fibre too, such as leeks, asparagus and bananas.

2. Take live bacteria daily

Live bacteria are sometimes believed to help ‘restore’ the balance of good bacteria in your gut. “When there’s an imbalance of bad and good bacteria in our body, this can impact our overall health.” Ms Sadler says.

Live yoghurt, kefir and fermented foods and drinks are among popular options. There are also probiotic supplements (although supplements should always be secondary to a healthy, varied diet). Ms Sadler recommends daily probiotics and suggests looking for one that contains 20 billion live organisms per dose and a variety of bacteria strains that work harmoniously to support the natural environment of the gut.

3. Increase your step count

Getting regular exercise is also linked to better gut health. “We all know exercise is good for almost everything, and this includes our gut health” Ms Sadler explains.

“A 2017 study found exercise is linked to increased diversity of gut bacteria, which is key for a healthy microbiome. And while more research is needed into this area to prove exactly why exercise is beneficial for the gut, the good news is that even gentle exercise, like walking and yoga, can help.”

4. Eat ginger

Ginger doesn’t just taste great when whizzed in a healthy green juice, it also packs some pretty impressive gut health benefits.

Pharmacist Mina Khan says: “Ginger reduces nausea caused by gut problems and stimulates the digestive system, which helps keep you regular and maintain a healthy gut.

“What’s more, ginger has fantastic anti-inflammatory properties, making it perfect for sufferers of IBS. From ginger tea, to using it in stir-fries and curries, there are so many possibilities when it comes to this wonderful spice.”

5. Cut down on artificial sweeteners

“Artificial sweeteners found in soft drinks may be harmful to gut bacteria and ‘damage’ the health of our microbiome,” Ms Sadler says. “This includes aspartame, which is found in diet soft drinks.

“While these diet soft drinks are often the preferred choice for the health-conscious, research has found that toxins are released when gut bacteria is exposed to the sweeteners.

“Cutting down on drinks with artificial sweeteners – in exchange for naturally flavoured water, with fresh lemon, lime or cucumber – where possible, is much better for our gut health,” she adds.

6. Take steps to manage stress

Being mindful and managing our stress levels can really make a difference.

“Stress can activate a negative chain reaction in the body, including the production of the stress hormone cortisol, which can change the balance of good bacteria in the gut, affecting communication pathways between the gut and the brain,” says Ms Sadler.

“Stress can also affect our digestion and the movement of food through the gut. For some people, it can speed digestion up and for others it can slow it right down, which can result in a host of different gut issues, from bloating and constipation to diarrhoea.”

There are loads of things that can help offset stress, with exercise or moving our bodies being one of the biggest. Fresh air, watching a comedy, putting your phone on silent and cooking a nourishing meal – every little bit helps.

– With PA

How many of those boxes were you able to tick? Do you have any other tips to better manage the immune system? Why not share them in the comments section below?

Also read: Why eating a fibre-rich diet can boost your mood

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