Last reviewed on 11 September 2026.
NNWA publishes the name and qualifications of everyone who writes and checks its material. You can see the full teaching team on the faculty page.
This guide explains what the evidence says, what an honest detox course should teach, and whether one is worth your money. NNWA runs a detox and cleanse course, and this article is written by its faculty, so it is fair to hold NNWA's own course to the standard set here.
Do detox diets actually remove toxins?
There is little good evidence that they do. The human body clears waste and harmful substances continuously through the liver, kidneys, gut, lungs and skin, and in a healthy person these systems work without special help. A review in the Journal of Human Nutrition and Dietetics in 2015 looked at the research on commercial detox diets and found no compelling evidence that they eliminate toxins. Most studies were small, poorly designed, or did not name which toxins were supposedly removed. When a product cannot say what it removes, it cannot show that it removes it.
Why do people feel better after a detox?
Because most detox plans remove things that make people feel worse. A week without alcohol, fried food, sugary drinks and late-night snacking, with more water, vegetables and sleep, will make most people feel lighter and more energetic. The improvement is real. The explanation is wrong. Nothing was flushed out; the person simply ate and lived better for a week. A good practitioner can give clients that benefit honestly, without the story about toxins.
Can detox diets be harmful?
Some can. Juice-only cleanses provide little protein and can cause dizziness, low blood sugar and loss of muscle when followed for long. Very high intakes of certain juices, particularly green juices high in oxalates, have been linked to kidney problems in case reports. Detox teas often contain laxatives or diuretics, which cause fluid loss that looks like weight loss and can upset electrolytes. People with diabetes, kidney disease, eating disorders, or who are pregnant should not follow restrictive cleanses. A detox course that does not teach these risks is not safe to learn from.
What should an honest detox course teach?
How the body's own clearance systems work, which popular detox claims are myths and why, which foods genuinely support liver and gut health, how to plan a sensible short reset built on ordinary food, and the importance of hydration, sleep and cutting back on alcohol. NNWA's Detox and Cleanse Nutrition course runs for three weeks at a beginner level and costs 5,999 rupees, with modules on how the body detoxifies and on detox myths and facts. Judge it, and every other detox course, on how much time it spends on the myths.
Is a detox course worth it for a nutritionist?
For a nutritionist who is regularly asked for detox plans, a short evidence-based course can help you answer the request well: you can offer a structured one or two week reset that improves how the client feels, explain honestly why it works, and steer them away from products that could harm them. That is a useful skill. It is not worth taking a detox course as a main qualification, and it is not worth paying for one that teaches you to sell cleanses as toxin removal.
What is the difference between a detox course and an Ayurvedic cleanse?
Ayurveda has its own concepts of cleansing, including panchakarma, a set of procedures performed under the supervision of a qualified Ayurvedic physician. A nutrition course that teaches Ayurvedic detox principles, such as NNWA's Ayurvedic Detox and Panchakarma Nutrition course, can teach the dietary side and the ideas behind it. It does not qualify anyone to administer panchakarma procedures, which belong to physicians with a BAMS degree. Our comparison of Ayurvedic and modern nutrition courses explains where that line sits.
What should a sensible reset plan look like?
Built on food a client already knows. For an Indian client, that might mean a week of home-cooked meals with plenty of vegetables and dal, fruit instead of sweets, water and buttermilk instead of sugary drinks, no alcohol, a fixed bedtime, and a daily walk. Nothing in it is exotic, and nothing needs a product. The best reset plans are really a gentle introduction to eating well, with a clear start and end that makes them feel achievable. Our article on gut health basics covers the digestive side.
Putting together a reset a client will finish
Nothing in it is exotic and nothing in it needs a product, which is most of why it works.
Start from what they want to feel
Lighter, less bloated, more energetic. Agree that a short reset can do that before explaining why it does.
Take out what is doing the damage
Alcohol, sugary drinks, sweets and late-night snacking, which is where most of the improvement comes from.
Build the week from food they already eat
Home-cooked meals with plenty of vegetables and dal, fruit in place of sweets, water and buttermilk instead of sugary drinks.
Fix the hours as well as the food
A set bedtime and a daily walk do as much for how the week feels as anything on the plate.
Give it a clear start and end
A plan with a finish line feels achievable, and the end is where you talk about what stays.
How do you explain this to a client who wants a detox?
Respectfully, and without mocking what they are asking for. Start with what they want to feel: lighter, less bloated, more energetic. Agree that a short reset can do that. Then explain that the body already does the cleaning, and that the reset works by giving it less to deal with and more of what it needs. Most clients accept this readily, and many are relieved not to have to drink green juice for a week. The conversation also sets you apart from practitioners selling cleanses.
Who should not take a detox course?
Anyone hoping to learn a quick protocol to sell. If your aim is to build a business on cleanses and detox teas, an honest course will disappoint you, and a dishonest one will put your clients at risk. People new to nutrition are better served by a foundation course first, such as NNWA's short Introduction to Nutrition, because understanding how digestion and metabolism normally work is the best protection against detox marketing.
What are the red flags in detox courses?
Claims that the course teaches you to remove named toxins, heavy metals or parasites through diet. Protocols built on juice fasting for more than a day or two. Recommendations for laxative teas, colon cleansing or supplements sold by the course provider. Promises that detox cures conditions such as acne, arthritis or fatigue. And any course that does not discuss who should avoid cleanses. A course with none of these features is teaching reset nutrition under a popular name, which is fine.
Which foods genuinely support the liver and gut?
Ordinary ones, eaten regularly. Fibre from vegetables, whole grains, pulses and fruit feeds the gut bacteria and keeps digestion regular. Fermented foods such as curd, buttermilk, idli and dosa batter add live cultures. Adequate protein gives the liver the building blocks it uses in its own clearance work. Cutting alcohol is the single most effective step for liver health, and keeping weight in a healthy range protects against fatty liver, which is now very common in Indian adults. None of this is dramatic, and none of it needs a product. The fatty liver diet guide shows how these principles become a daily plan.
The honest verdict
A detox course is worth a small investment if it makes you better at meeting a common client request honestly, and worthless if it teaches you to repeat the claims. The best detox courses would be accurately described as courses about how the body looks after itself, and how to help it. If the one you are considering fits that description, take it. If it promises to flush anything out, walk away.