Every January, Dutch supermarket shelves fill up with detox teas, cold-pressed juice kits and herbal cleanse programmes. The message is usually the same. Your body is overloaded, and these products can help clear it out. The science points somewhere else.
To understand what wellness marketing is really selling, it helps to separate persuasive language from basic physiology.
The Body Already Has a Detox System
Your liver, kidneys and lymphatic system are already running a sophisticated, continuous detoxification process that no tea or cleanse can meaningfully copy or speed up. These organs work constantly to filter waste, process metabolic byproducts and neutralise harmful compounds. No outside product switches this system on. It is already on.
The liver alone carries out more than 500 functions, including metabolising fats, producing bile and breaking down alcohol. The kidneys filter roughly 200 litres of blood per day. These are not lazy systems sitting around waiting for a herbal nudge.
What ‘Detox’ Marketing Actually Sells
Registered dietitians have long said that the word ‘toxin’ in wellness marketing is intentionally vague, and that vagueness is a big part of what makes it persuasive. If a brand cannot clearly identify which toxins its product removes, that should raise concern.
Part of the appeal is psychological. After a stretch of overindulgence, whether from holiday food, alcohol or stress, people often want some kind of reset. Wellness brands are very good at turning that feeling into a product. The ritual can feel reassuring. The problem is that the product itself usually does not do what the marketing suggests.
Common claims that lack clinical evidence include:
- Detox teas ‘flushing’ the liver or colon
- Juice cleanses ‘resetting’ the digestive system
- Olive oil and lemon ‘liver flushes’ releasing stored toxins
- Activated charcoal supplements clearing everyday dietary waste
In the Netherlands, the Dutch Food and Consumer Product Safety Authority (NVWA) has repeatedly flagged misleading health claims on wellness products. EU rules ban unsubstantiated health claims on food packaging, but enforcement is still inconsistent, especially across online retail channels.
The wellness industry has a lot in common with other consumer sectors built on aspiration and clever messaging. The same kind of scrutiny people use before spending money on supplement plans, financial products or entertainment platforms like best online casino’s should also apply to detox products, where the gap between promise and proof can be wide.
What Actually Supports Liver and Kidney Health
The evidence-based ways to support the body’s natural detox systems are simple, and not especially glamorous:
- Adequate hydration – Water supports kidney filtration and waste excretion
- Fibre intake – Supports gut transit and reduces reabsorption of waste compounds
- Reduced alcohol consumption – The liver prioritises alcohol metabolism, which can crowd out other functions
- Sleep – The brain’s glymphatic system clears metabolic waste mainly during deep sleep
- Regular physical activity – Improves circulation, lymphatic flow and metabolic efficiency
When it comes to herbal remedies and their real-world effectiveness, the picture is more nuanced. Some herbs do have measurable physiological effects in controlled settings, while others rely mostly on anecdote. Milk thistle, for instance, contains silymarin, which has shown some hepatoprotective properties in clinical studies. Dandelion root has mild diuretic effects. That is not the same thing as detoxifying the body, but at least those are observable biological actions.
Juice Cleanses and the Calorie Deficit Illusion
A lot of people say they feel better after a juice cleanse. That feeling is real, but the explanation is usually much less dramatic than detox marketing implies. In most cases, it comes down to eating fewer calories and cutting back on highly processed foods, not to any special cleansing effect from the juice itself. The sense of lightness and clarity often linked to ‘toxin removal’ is more likely explained by:
- Lower calorie intake reducing digestive load
- Reduced sodium and processed food decreasing water retention
- Psychological benefit of a structured health ritual
The fact that these effects fade quickly is telling. Without longer-term dietary changes, the body tends to return to its previous baseline. A three-day juice cleanse does not create lasting metabolic change.
Making Smarter Choices in a Wellness-Saturated Market
Dutch consumers spend hundreds of millions of euros each year on wellness products. Looking critically at product claims is not cynicism. It is a basic form of financial and physical self-protection.
The most effective and evidence-supported forms of bodily detoxification are entirely free, and most people are already doing them without thinking much about it. Sleeping well, staying hydrated, eating vegetables and moving regularly do not sell as easily as a 14-day cleanse programme. Still, they are the habits the evidence consistently supports.
Before buying any wellness product, it is worth asking three simple questions: What specific toxin does this product remove? What clinical evidence supports that claim? What happens to the results once the product is discontinued?
If the answers are vague, the product is probably selling a feeling more than a physiological outcome. Knowing that difference, whether in wellness, finance or consumer choices more broadly, is the basis of genuinely informed decision-making.