Fad / Crash
ContestedJuice Cleanse: An Honest Audit (2026)
Cold-pressed juice as sole intake for 3-7 days
- Cost / month
- ~$350
- Visible results
- ~5 days
- Evidence quality
- contested
What it claims
Cold-pressed juice as the sole intake for 3-7 days, marketed as 'detoxification', cellular cleansing, and rapid weight loss.
The mechanism
Liquid sugar (juice) at low overall calories produces fasting-like states without the benefits of true fasting. Insulin spikes from sugar prevent ketosis or autophagy. Removing fibre is metabolically downgrade-only.
What the research actually shows
No serious supportive evidence. 'Detoxification' is not a real biological need beyond what liver/kidneys do continuously. Calorie restriction produces weight loss; juice is a poor vehicle for it.¹Cell Metabolism · 2019Hall KD et al. — Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake
Who it works for
No one for stated purposes.
Who it fails
Everyone.
The honest verdict
Juice cleansing combines marketing pseudo-science with a poorly-designed VLCD. You spike insulin while restricting calories, miss out on protein and fibre, lose lean mass, and rebound. Cost is high. Avoid.
What to do instead
If you want a reset: Whole30 or a 5-day moderate-protein VLCD with whole foods. Skip the juice marketing.
Common misconceptions
- Does juicing 'reset' my system?
- No. The body doesn't have a reset mechanism activated by juice.
References
- 1.Hall KD et al. (2019). Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake. Cell Metabolism. PubMed 31105044
Free · 2 minutes
Did Juice Cleanse not work for you?
That's the rule, not the exception. Take the Metabolic Damage Assessment to find the protocol that actually fits your profile.