Noni juice

Key takeaways

Noni juice belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Noni juice to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Noni juice from memory before moving on to harder problems.

Reference excerpt

Noni juice is derived from the fruit of the Morinda citrifolia tree indigenous to Southeast Asia and Australasia. It has been promoted, illegally in several cases, as a cure for a number of human diseases. However, there is no evidence to support any claims of therapeutic benefit.

Regulatory warnings

Tahitian Noni (Morinda, Inc.) On August 26, 1998, the Attorneys General of Arizona, California, New Jersey, and Texas announced a multi-state settlement with Morinda, Inc. following charges that the company had made "unsubstantiated claims in consumer testimonials and other promotional material indicating that its Tahitian Noni juice could treat, cure or prevent numerous diseases such as diabetes, clinical depression, hemorrhoids and arthritis." Such claims rendered the beverage an unapproved new drug under state and federal food and drug laws and should not have been sold until it received approval. Under the terms of the agreement, Morinda agreed to:

No longer make drug claims, or claims that the product can cure, treat, or prevent any disease until "Tahitian Noni" is approved and cleared for those uses by the U.S. Food and Drug Administration. Not make any other claims, whether health claims or others, regarding the benefits of Tahitian Noni unless such claims are true and the company can substantiate the claim by reliable scientific evidence. Not use testimonials which imply that the advertised claimed results are the typical or ordinary experience of consumers in actual conditions of use, unless Morinda possesses and relies upon adequate substantiation that the results are typical or ordinary.

Other In August 2004, the US Food and Drug Administration issued a Warning Letter to Flora, Inc. for violating section 201(g)(1) of the Federal Food, Drug, and Cosmetic Act (the Act) [21 U.S.C. § 321(g)(1)]. Flora made twelve unfounded health claims about the purported benefits of noni juice as a medical product, in effect causing the juice to be evaluated as a drug. Under the Act, this necessitates all safety and clinical trial evidence for the juice providing such effects in humans. The FDA letter also cited 1) absent scientific evidence for health benefits of the noni phytochemicals scopoletin and damnacanthal, neither of which has been confirmed with biological activity in humans, and 2) lack of scientific foundation for health claims made by two proponents of noni juice, Dr. Isabella Abbot and Dr. Ralph Heinicke. Two other FDA letters have been issued for the same types of violations.

Toxicity Research has pointed to anthraquinones found in noni roots, leaves and fruit as potentially toxic to the liver and other organs. In 2005, two published clinical case reports described incidents of acute hepatitis caused by ingesting Tahitian Noni juice. These case reports were reviewed in 2006 by the European Food Safety Authority (EFSA), which initially reported that data available at the time of the case reports were not sufficient to establish a causal relationship between consumption of the juice and hepatotoxicity; however, an increasing number of subsequent case reports suggested that some individuals may be particularly sensitive to hepatotoxic effects of noni fruit products. The U.S. National Center for Complementary and Integrative Health advised against consumption of noni products if one has a history of liver disorders. The potential for toxicity caused by noni juices remained under surveillance by EFSA, individual food safety authorities in France, Finland and Ireland, and medical investigators in Germany. Noni products may contain high amounts of potassium, leading to one advisory that people on potassium-restricted diets because of kidney problems should avoid using noni.

Medical claims Although noni plants and juices have been promoted by practitioners of alternative medicine as a cure for a number of human maladies including HIV, heart disease and cancer, the American Cancer Society concluded that "there is no reliable clinical evidence that noni juice is effective in preventing or treating cancer or any other disease in humans".

See also List of unproven and disproven cancer treatments Tahitian Noni juice

References

Further reading "The Noni Website". University of Hawaii. 2006. Thomas, Chris (August 30, 2002). "Noni No Miracle Cure". Cancerpage.com. Archived from the original on June 26, 2008.

Illustrations

Worked examples

Example 1 — a first encounter with Noni juice

Start with the simplest possible case. Write down what Noni juice claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Noni juice before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Noni juice ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Noni juice

In research: Noni juice appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Noni juice in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Noni juice is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alternative cancer treatments, Fruit juice, Pseudoscience, so understanding it makes those chapters shorter.
In everyday life: Look for Noni juice outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Noni juice in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Noni juice means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Noni juice out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Noni juice in simple terms?

Noni juice is derived from the fruit of the Morinda citrifolia tree indigenous to Southeast Asia and Australasia. It has been promoted, illegally in several cases, as a cure for a number of human diseases.

Why does Noni juice matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Noni juice?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Noni juice.