Detox / cleanse programs flush accumulated toxins
The liver (through two stages of chemical processing, phase I and II) and the kidneys clear metabolic waste around the clock. A review (Klein & Kiat 2015) found no rigorous randomized trials behind commercial detox; the short-term weight loss is just water and bowel contents.
Why the claim spreads
'Toxins' is kept deliberately vague (never named), which makes the claim unfalsifiable and the product universally appealing; juice/cleanse brands lean on post-indulgence guilt.
The mechanism, in brief
A review that set out to examine the evidence for commercial detox diets reached a blunt conclusion: there is very little clinical evidence, and to the authors' knowledge, no one has run a randomized controlled trial in people to test whether commercial detox diets work. The handful of studies that claimed a benefit…
Sources (2)
- Klein, A. V., & Kiat, H. (2015). Detox diets for toxin elimination and weight management: a critical review of the evidence. Journal of Human Nutrition and Dietetics, 28(6), 675-686. Very little clinical evidence supports detox diets: a handful of clinical studies reported enhanced liver detoxification or removal of persistent organic pollutants, but they were hampered by flawed methods and small samples; evidence for particular foods (coriander, nori, olestra) is preliminary and mostly from animals; and, verbatim, 'no randomised controlled trials have been conducted to assess the effectiveness of commercial detox diets in humans' (abstract, PMID 25522674).
- Guengerich, F. P. (2008). Cytochrome P450 and chemical toxicology. Chemical Research in Toxicology, 21(1), 70–83.