Does Stress Affect Detoxification? The Link Between Cortisol and Liver Health

Since it’s spring, I’ve had lots of messages about detoxification, cleansing and releasing energy. And you know me, I’m all for supporting the body in that way, as detoxification is one of the body’s most important daily processes.

But a question that keeps coming up is why does a detox make some people feel worse? And honestly, more often than not, my answer comes back to one thing - stress.

So today I want to talk about something that isn’t spoken about enough: how stress affects detoxification, and the role cortisol plays in liver health.

Because yes, detoxification is something the body is naturally designed to do. But there are times when pushing it too aggressively can actually add more stress to the system. And when cortisol levels rise, detoxification can become less efficient.

Once you understand that, it really changes how you approach cleansing and supporting your body.

What Detoxification Actually Means

When we think about detoxification, the liver usually comes straight to mind, and rightly so. It’s our main detoxification organ, working constantly to process toxins, hormones and metabolic waste so they can be safely removed from the body.

This is happening all the time, whether we’re thinking about it or not. The liver is continually transforming substances, so they can be eliminated through digestion, urine, bile and the lymphatic system.

But detoxification isn’t just about “flushing things out”. It’s a process that relies on the body having the right nutrients, enough energy, and strong antioxidant support to handle everything properly.

As the liver processes toxins, it naturally produces small amounts of by-products along the way. Normally, the body deals with these easily, but if support is low, they can start to build up and place more strain on the system.

And this is where things start to shift, because detoxification isn’t just about the liver, it’s about the state your body is in. And when the body is under stress, it doesn’t stop detoxifying, but it may become less efficient as the body prioritises survival.

So things like digestion, repair and detoxification can take a bit of a back seat, while the body focuses on getting you through that stress. Which means even if you’re doing ‘all the right things’, your body might not be in the best place to actually process them properly.

Stress Hormones, Oxidative Stress and Detoxification

Doesn’t everything seem to come back to stress? It’s always the advice we hear ‘reduce your stress’, but in reality it’s actually one of the hardest things to change, especially in the fast paced, go go go world we live in.

So what’s actually happening in the body? When we experience stress, the body releases cortisol. In the short term, this is helpful as it gives us energy, keeps blood sugar stable and helps us respond to whatever is going on.

But when stress becomes ongoing, and cortisol stays elevated for long periods of time, it starts to affect other systems, including detoxification. It can also reduce the body’s ability to maintain its natural antioxidant balance, including levels of glutathione, which plays a key role in detoxification. 

This is often where people feel confused, especially when you’re eating well, maybe taking supplements, trying to support your body, but you still feel sluggish, reactive or like things just aren’t quite working.

It’s not because your body isn’t detoxifying, it’s because it’s already working harder just to stay balanced. So detoxification is still happening, but it’s not happening as efficiently as it could be.

The NRF2 Pathway: The Body’s Detox Support System

Now this next part might sound a little more technical, but I’ll keep it simple because it’s actually really interesting.

There’s a system in the body called the NRF2 pathway, and it plays a big role in how we handle stress and support detoxification. When this pathway is working well, it helps the body produce antioxidants and supports the processes involved in detoxification, including the production of glutathione.

So it’s essentially one of the ways the body protects itself and keeps things balanced, but again, stress comes into play. When cortisol stays elevated for long periods, it can reduce how active this system is, meaning the body may not produce the same level of support it needs to deal with stress and detoxification efficiently.

This is part of why, during periods of stress, you might feel more sensitive, more inflamed, or slower to recover.

Cortisol, Liver Metabolism & Weight

Cortisol also plays a big role in metabolism, which is why this often links in with things like weight, energy and how your body feels day to day.

The liver responds to cortisol, and over time, if levels stay high, it can start to affect things like blood sugar balance, fat storage and overall metabolic function. This is why chronic stress is often linked with increased abdominal weight, blood sugar changes and even fatty liver.

There’s also another layer to this, where the liver can actually increase its exposure to cortisol internally during times of stress, which adds even more pressure to the system. So over time, this doesn’t just affect how you feel, but it can also affect how efficiently the liver is able to do its job.

Why Aggressive Cleansing Can Backfire

This is where everything starts to come together, because timing really does matter. If your body is already feeling stressed, run down or overwhelmed, pushing detoxification harder can sometimes feel like adding more pressure rather than support.

It’s not that detoxification is wrong, it’s just that your body might not be in the right place for it.

Detoxification needs energy, nutrients and support, but if your body is already using those just to stay balanced, there’s not much left over.

So when you add in something more intense like restrictive diets, fasting or heavy detox protocols, it can actually make things feel worse.

This is when people notice things like fatigue, headaches, skin flare ups or feeling more bloated or sluggish. And sometimes, instead of feeling lighter, the body can hold onto more water or feel more inflamed, which feels like the opposite of what you were hoping for.

Looking Ahead

Once you understand the link between detoxification and cortisol, it completely changes how you approach things. For detoxification to work well, the body needs to feel safe and supported.

When stress levels are lower and the nervous system is more balanced, the body can shift back into a state where digestion, repair and detoxification can happen more efficiently. Because detoxification is always happening, but when it comes to supporting it more intentionally, it tends to work best when you already feel relatively well, nourished and balanced.

And honestly, one of the most important takeaways from all of this is to listen to your body as it’s incredibly intelligent. It will always give you signals about what it needs, often more accurately than any plan, programme or advice.

In Part 2, I’ll go into the practical side of this and how to support detoxification in a way that actually works with your body. Including all the supplements in my brand new Spring Cleanse and Cortisol Reset, which include nutrients that support liver health, and help your body detox more efficiently without adding extra stress.