The Liver and Immune System: How to Strengthen Immunity and Longevity This Autumn

Welcome back to the final blog in our Liver Cleanse Campaign. I’ve absolutely loved sharing this series with you, it’s been a long time coming to give our amazing longevity organ the attention it deserves!

Today, I want to talk about the connection between the liver and immune system, especially now that we’re deep into autumn with winter just around the corner.

As the seasons shift, so do our bodies. Autumn is a time of grounding, reflection, and rebuilding, but it’s also when our immune systems need the most care.

According to traditional Chinese medicine, this season is ruled by the lungs and large intestine, which are organs of release and renewal, and both supported by the liver, reminding us just how closely the liver and immune system are linked.

When the liver is sluggish, your body’s ability to filter toxins, clear inflammation, and produce immune supporting compounds drops dramatically. Energy fades, skin dulls, and resilience wanes. But when your liver is nourished, it powers immunity, longevity, and vitality from within.

How the Liver Supports the Immune System

You’ve heard me say it before - the liver is so much more than a detox organ. It’s one of the most immune active tissues in the body, filtering around a litre of blood every minute to identify and neutralise bacteria, viruses, and toxins.

It also helps regulate immune cell production, inflammation, and nutrient metabolism, all of which determine how well your body can defend itself.

When the liver becomes overburdened (from stress, alcohol, processed foods, toxins or lack of sleep), immune function takes a hit. Inflammation rises, detox slows, and the body struggles to stay balanced. That’s why caring for your liver is one of the most powerful ways to strengthen your immune system.

Does Glutathione Boost Immune System?

Now, I don’t want to reinvent the wheel, as we’ve already talked a lot about these supplements. But I do want to highlight our Natural Liver Cleanse Bundle and how it specifically supports immunity and longevity.

Let’s start with the master antioxidant and core supplement in our Liver Cleanse: Glutathione.

People often ask, does glutathione boost the immune system? So, let me explain. Glutathione is actually one of the body’s most powerful defence molecules. It protects immune cells, neutralises free radicals, and regenerates other antioxidants like vitamins C and E.

When glutathione levels are high, your immune system functions more efficiently, inflammation stays under control, and your skin has that famous “glutathione glow.” And yes, it’s correct that glutathione is made in the liver, which is why it’s so vital for both liver and immune function.

The added benefit of our Natroceutics Glutathione is the inclusion of SOD (Superoxide Dismutase), often called the “youth molecule.” SOD works deep within cells to reduce oxidative stress, slow ageing, and support collagen formation and cellular energy.

Together, these two antioxidants are the perfect pairing for health, longevity, and that radiant, just feel good glow.

Milk Thistle: 24 Hour Liver Protection for Seasonal Resilience

Our Milk Thistle Bio-Active is one of the most potent liver supplements on the market. Whether you enjoy an occasional glass of wine, richer foods, or are simply feeling the drag of seasonal stress, your liver is constantly working behind the scenes to keep you well.

Natroceutics Milk Thistle Bio-Active has been clinically studied and shown to provide 24 hour protection for the liver. Its advanced phospholipid technology boosts absorption, so every dose works harder to protect cells and regulate liver enzymes.

This is why we love it for seasonal prep. You don’t need to “save” liver support until after your holidays or celebrations, this is exactly when it’s most useful. It gives you that extra layer of protection during busy periods and strengthens immunity when you might otherwise feel run down.

Milk Thistle Active is so much more than a cleanse supplement, it’s about protecting your liver so your immune system stays strong, balanced, and ready for the festive season.

Defence Pre & Probiotic: Your Daily Shield

Another supplement I absolutely adore during this period is Defence. It’s one of the most comprehensive immune supporting formulas available. With probiotics for gut health and a powerful blend of antioxidants for the immune system, including black seed oil, ginger, olive leaf, reishi, and NAC.

They work synergistically together with the liver to strengthen immunity, support respiratory and gut health, reduce inflammation, and boost overall resilience. We recently talked more about this, which you can read here. 

Longevity Lessons from the Blue Zones

When it comes to longevity, we look everywhere for advice. Society has become obsessed with looking and feeling younger - but are we missing the point?

If we look to the world’s longest living populations, the Blue Zones, there’s a clear pattern in how they naturally protect their liver and immune health. Their habits aren’t extreme, they’re simple, consistent, and rooted in balance.

Here’s what they do differently (and what we can learn):

• Plant-rich nutrition: Antioxidant rich foods like colourful vegetables, extra virgin olive oil, nuts, and legumes, support the immune system and detoxification. 

• Natural movement: Daily, gentle exercise like walking and gardening. It doesn’t have to be HIIT and hot yoga every day, any movement keeps circulation flowing and the liver oxygenated.

• Community & connection: A sense of purpose and belonging helps balance cortisol, which eases the liver’s load. This is so important, and something I always talk to my clients about. 

• Rest & rhythm: Regular meal times and plenty of restorative sleep allow the liver to repair and recharge overnight.

Time to Protect, Not Restrict:

Your liver is your longevity lover, silently protecting you every day by filtering, cleansing, and fuelling your immune system. Supporting it during seasonal transitions, and before busy months ahead, means less restriction, fewer crashes, and a greater sense of balance and control.

So, whether you’re preparing for gatherings, a hectic work period, or simply want to feel your best, now is the perfect time to prioritise your liver. A nourished liver means a stronger immune system, clearer skin, calmer mood, and longer lasting energy - the kind that truly carries you into longevity.