Helping Your Immune System Do Its Job

First published in the Twizel Update – July 2026

With winter well and truly upon us, conversations about immunity seem to appear everywhere. We hear about foods to eat, supplements to take and products that promise to "boost" our immune system.

But over the years, I've found myself asking a different question.

Instead of wondering how to boost my immune system, I now ask myself: How can I make life a little easier for it?

Our immune system isn't something that suddenly switches on when someone coughs next to us. It is working quietly every minute of every day, constantly deciding what belongs in our body, what needs repairing, what should be ignored and what needs to be dealt with. By the time winter arrives, much of the work our immune system does has already been shaped by the way we've been living throughout the year.

One of the biggest misconceptions is that immunity depends on one thing – one supplement, one superfood or one magic ingredient. In reality, our immune system responds to the whole picture. It is influenced by how well we sleep, how we manage stress, the quality of our relationships, whether we move our bodies, what we regularly eat and drink, the health of our gut, how much time we spend outdoors, and whether we have purpose and meaning in our lives.

It's easy to look for one cause when we become unwell. Was it the weather? Was it the virus? Was it something we ate? More often than not, our bodies are responding to the combined effect of many different influences. We can't control every virus that comes our way, but we can influence the environment in which our immune system has to operate. Health isn't something we achieve for a few weeks each winter. It's the environment we create for our bodies every single day.

As a health coach, I've noticed that people rarely struggle because they don't know what they "should" be doing. Most of us know that sleep matters, that vegetables nourish us more than lollies, that movement is good for us and that chronic stress takes its toll. The challenge is usually not a lack of information. It is the accumulation of small daily habits that either support our body or quietly add to its workload.

One area that has fascinated me over the years is the close relationship between our gut and our immune system. Much of our immune activity is associated with the gut, where trillions of bacteria help educate and regulate immune responses. That doesn't mean we need to obsess over every meal, but it does remind us that regularly choosing whole, fibre-rich foods over highly processed ones isn't just about digestion – it's about supporting one of the body's key defence systems.

I also find myself thinking less about what I can add and more about what I can remove. Can I reduce the amount of highly processed food I'm eating? Diets high in added sugars don't just displace more nutritious foods; they can also contribute to inflammation and temporarily affect aspects of immune function. Can I make a little more time for sleep? Can I reduce unnecessary stress where possible? Think about whether your daily habits are feeding your body or simply giving it more work to do.

One habit I've come to appreciate during winter is simply getting outside every day, even when it's cold. I usually try to time my walk for the middle of the day where possible, when the sun is a little higher in the sky, to make the most of any winter sunshine. On foggy days that matters less, but I still head out. Fresh air, natural light and movement seem to improve not only my physical wellbeing but also my mood and my outlook. I almost always return home feeling more energised, more positive and better able to tackle whatever the rest of the day brings. Our immune system doesn't expect perfection. It simply benefits from consistency.

If I had to choose a few simple habits to focus on this winter, they wouldn't involve buying another supplement. I'd aim to get outside every day, eat mostly whole foods, drink enough water, make sleep a priority and find healthy ways to manage stress. I'd also pay attention to the things that quietly make life harder for my body – too much added sugar, highly processed foods, constant rushing or never giving myself time to recharge. None of these habits are particularly glamorous, but together they create an environment in which our immune system has the best chance of doing what it was designed to do.

Perhaps that's one of the greatest gifts we can give our bodies this winter. Not perfection, but the right conditions to thrive.

Our bodies are constantly repairing, rebuilding and protecting us in ways we rarely stop to appreciate. Every cut that heals, every infection we recover from and every cell that is replaced is a reminder of the remarkable intelligence built into our biology. We don't have to direct those processes - they are already happening.

What we can influence is the environment in which they take place.

This winter, instead of asking, "What supplement should I take?", perhaps ask yourself a different question:

"What is one small thing I could do - or stop doing - that would make life a little easier for my body?"

Whether that's getting outside for a walk, choosing more whole foods, making sleep a priority, reducing added sugars, drinking more water, or simply slowing down long enough to recover, every small choice contributes to the environment your body has to work with.

I don't believe health comes from chasing perfection. I believe our bodies have remarkable healing and repair mechanisms, and our role is to support them as best we can.

Sometimes the greatest thing we can do for our health is simply to give our bodies half a chance.

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Thank you for reading

I hope this article has given you something to think about.

If you'd like to continue exploring, you'll find more reflections in the Articles collection. And if you're curious about the way I work as an Integrative Health Coach, you're warmly invited to explore the rest of my website.