A green juice for the price of a meal, promising to "flush out toxins." The simple question nobody asks: which toxins, exactly?
What do the reviews say?
Clinical trials of detox diets are small, heterogeneous and methodologically problematic, and reviews conclude there is insufficient evidence that detoxes or juice cleanses enhance liver or kidney detoxification pathways[1]. Biomarker studies measuring heavy metals, pesticides and metabolic waste before and after a cleanse find no consistent reduction attributable to it[1].
elimination
reflect fluid loss
work continuously
And the "results" people see?
Short-term reductions in weight and blood pressure reflect fluid loss and reduced sodium intake, not toxin elimination[1]. Which is why the number returns within days of eating normally again.
The physiological reality
The liver, kidneys, lungs and digestive system remove waste continuously. If toxins genuinely built up to dangerous levels, you would need emergency medical care, not a juice[2],[3].
And there is potential harm
Most commercial detox plans have limited evidence and may cause dehydration, low blood sugar, or interactions with medicines[1]. Depending on your health, cleanses built on high-oxalate foods such as spinach and carrots can harm the kidneys[1].
What actually "cleanses"?
The evidence points to the boring fundamentals: a balanced diet, regular physical activity, good sleep, and limiting alcohol[1] — with no monthly subscription and no promises.