No, detox diets don’t work the way they claim. There’s no good evidence that juice fasts, cleanses, detox teas or special supplements remove toxins from your body, and your body already has an effective system for that: your liver, kidneys, gut, lungs and skin. The US National Center for Complementary and Integrative Health notes that a 2015 review found no compelling research to support detox diets for weight management or eliminating toxins, and that juicing and detox diets can cause initial weight loss from low calorie intake but tend to lead to weight gain once people go back to eating normally. Some detox products can also be harmful.
What detox diets promise
Detox diets, cleanses and products are marketed with claims such as:
- Removing “toxins” built up from food, alcohol or pollution.
- Rapid weight loss and a flatter stomach.
- More energy, clearer skin and better digestion.
- “Resetting” the body after overindulgence.
They take many forms: juice-only fasts, very low-calorie liquid diets, detox teas, supplements, foot pads, colon cleanses and strict eating plans that cut out whole food groups.
What the research shows
According to the NCCIH, some detox studies have reported effects on weight, fat loss, insulin resistance or blood pressure, but the studies have been of low quality, with design problems, few participants or no peer review. Most products never name which toxins they remove, or measure them before and after.
Short-term weight loss on detox diets is mostly water and glycogen from eating very little, along with laxative effects from some teas. It returns once you eat normally again.
How your body really removes waste
- Liver: breaks down alcohol, medicines and waste products so they can be removed.
- Kidneys: filter the blood and remove waste in urine.
- Gut: removes waste in stools. Fiber helps keep things moving.
- Lungs: remove carbon dioxide.
- Skin: a barrier that also releases small amounts of waste in sweat.
You can support these organs by eating a balanced diet, drinking enough water, limiting alcohol, not smoking, staying active and sleeping well. No product makes them work better than they already do in a healthy person.
Potential harms of detox products
- Laxative teas can cause cramping, diarrhea, dehydration and electrolyte imbalances, and regular use can affect how your bowel works.
- Colon cleansing: the NCCIH says there’s limited clinical evidence for colonic irrigation, and that harmful effects are more likely in people with a history of digestive disease, colon surgery, severe hemorrhoids, kidney disease or heart disease.
- Unpasteurized juices used in cleanses can carry bacteria that make people sick, which is a particular risk for children, older adults, pregnant people and anyone with a weakened immune system.
- Very low-calorie diets can leave you tired, irritable, dizzy and short of protein and nutrients, and they’re unsafe for some people, including those with diabetes who take medication.
- Some supplements contain undeclared ingredients or interact with medicines. The FDA warns that some weight loss products contain hidden drugs.
- High-oxalate juice cleanses, for example with large amounts of spinach and beet juice, have been linked with kidney problems in some case reports.
Our article on weight loss supplements covers the risks in more detail.
What to do instead
If you want to feel healthier after a period of overindulgence, these steps work better than any detox:
- Drink water instead of alcohol and sugary drinks. Our guide on how much water to drink explains how much you need.
- Eat plenty of vegetables and fruit, aiming for at least 5 portions a day.
- Choose fiber-rich foods, such as whole grains, beans and lentils, which support digestion. Our list of high-fiber foods has ideas.
- Have some alcohol-free days.
- Cut back on ultra-processed foods. Our guide to ultra-processed foods shows how.
- Move more and sleep well.
If weight loss is your goal, a sustainable approach of 0.5 to 1 kg a week works better than a quick fix; see our guide on how to lose weight safely.
A note on strict food rules
Rigid rules that label foods as “good” or “bad” can lead to anxiety around eating and, for some people, to disordered eating. Healthy eating is about overall patterns, not perfection, and there’s room for all foods in moderation. If food rules are taking over your life, talk to your doctor.
Why detox diets feel like they work
People often feel lighter or more energetic during a detox, which makes the claims seem convincing. The likely reasons have nothing to do with toxins:
- Cutting alcohol, sugary drinks and ultra-processed foods for a few days genuinely helps people feel better.
- Drinking more water reduces mild dehydration.
- Eating more fruit and vegetables adds fiber and nutrients.
- Water and glycogen loss shows up quickly on the scales.
- Expectation: believing something will help can change how we feel.
You can keep the useful parts, more water, more plants and less alcohol, without restrictive diets or products. If alcohol is part of the reason you want to “detox,” the NHS advises not regularly drinking more than 14 units a week, spread over 3 or more days, with several drink-free days.
Common questions
Do foot pads or ionic foot baths remove toxins?
No. The color changes they show come from sweat, moisture or the reaction of the pad or water itself, not from toxins leaving your body.
Do detox teas work?
Many contain laxatives such as senna, which cause water loss and bowel movements, not fat loss. They aren’t safe for regular use.
Is a juice cleanse healthy?
A short juice cleanse is unlikely to harm a healthy adult, but it doesn’t remove toxins, it’s low in protein and fiber, and any weight lost usually comes back. Whole fruit and vegetables are a better choice.
Can anything help my liver?
Limiting alcohol, maintaining a healthy weight, eating a balanced diet and being active are the best ways to keep your liver healthy. If you’re worried about your liver, see your doctor.
This article is general information, not medical advice. Talk to your doctor or a registered dietitian before making big changes to how you eat, especially if you have a health condition, take regular medication, or are pregnant or breastfeeding.
