Noni juice is a globally popular health beverage originating in the tropics. Traditional Tahitian healers believe the noni plant to be useful for a wide range of maladies, and noni juice consumers throughout the world have similar perceptions. Nevertheless, human clinical trials are necessary for a precise understanding of what the health benefits of noni juice are. A review of published human intervention studies suggests that noni juice may provide protection against tobacco smoke-induced DNA damage, blood lipid and homocysteine elevation as well as systemic inflammation. Human intervention studies also indicate that noni juice may improve joint health, increase physical endurance, increase immune activity, inhibit glycation of proteins, aid weight management, help maintain bone health in women, help maintain normal blood pressure, and improve gum health.

Further, these studies point to notable antioxidant activity in noni juice, more so than other fruit juices which served as trial placebos. It is this antioxidant effect and its interaction with the immune system and inflammation pathways that may account for many of the observed health benefits of noni juice. However, the existing evidence does have some limitations as far as its general application to noni juice products; all the peer-reviewed human interventions studies to date have involved only one source of French Polynesian noni juice. Geographical factors and variations in processing methods are known to produce commercial noni juice products with divergent phytochemical and nutrient compositions. Therefore, other sources of noni products may have different toxicological and pharmacological profiles.

What are the benefits

1. Potential uses of noni fruit juice for cancer

Noni fruit juice may have anti-cancer activity. Gastric cancer patients regularly took homemade noni fruit juice, and their condition improved. The effect of cancer reduced down may be due to the Noni fruit juice². However, despite several claims about noni juice being cancer effective, no human trials exist to back this claim. Therefore, it is essential to consult doctors for cancer treatment and not use it for self-medication.

2. Potential uses of noni fruit juice for arthritis

Noni fruit juice may have anti-inflammatory properties. In addition, it may help improve joint pain and aid in flexibility and mobility of the joints. One of the traditional names of noni in the Caribbean was “pain killer.” However, in a clinical trial, participants were given noni fruit juice. At the end of the trials, the patient’s pain intensity was significantly decreased with complete relief of neck pain. Hence, noni juice for arthritis may show certain benefits against arthritis. However, if you experience severe joint pain, consult your doctor, and take appropriate treatments.

3. Potential uses of noni fruit juice for weight loss

In multiple animal studies, noni fruit juice has shown significant weight loss with a decrease in body fat. In a clinical study by Palu et al., 2011, it was found that when obese adults were given noni fruit juice, every participant experienced weight loss. This may help in managing body fat. However, the study could not determine how much noni juice contributed to weight loss.¹ Hence, more clinical studies are needed to propose a firm conclusion about the uses of noni juice for weight loss.

4. Potential uses of noni fruit juice for diabetes

The benefits of noni juice may be related to lowering blood sugar levels. In an animal study by Umezawa et al., 1992 was found that fermented noni fruit juice may significantly decrease fasting glucose levels. They suggested that noni fruit juice may act as insulin directly or increase peripheral tissue sensitivity to the storage of more insulin. However, this is an animal study; therefore, more human research is needed to suggest the potential uses of noni fruit juice for managing diabetes.​⁴​

5. Potential uses of noni fruit juice for skin health

Noni juice benefits the skin and may be associated with enhancing skin health. In a clinical trial, West et al., 2012 found that a noni juice-based skin care regimen in women effectively reduced fine lines, facial wrinkles, and firmness when applied on the face. In addition, there was no report of any skin irritation during or after the trial. Hence, the benefits of drinking noni fruit juice may help to increase skin health. However, if you have any skin-related issues consult your doctor and do not self-medicate.

6. Other Potential Uses of Noni Fruit Juice

• A clinical trial with 10 people suggested that noni fruit juice may decrease high blood pressure (systolic high blood pressure).
• A study found that heavy smokers with high cholesterol levels, when regularly taking noni fruit juice, may help decrease total cholesterol and triglycerides levels. Hence, drinking noni fruit juice might increase good cholesterol and reduce heart disease risk.
• Noni juice may have anti-depressant activity which may help against depression and anxiety.
• Animal studies state that noni fruit juice may positively impact the nervous system’s functioning.
• Noni fruit juice benefits may be associated with oral hygiene. It may be used as a promising tool for managing gingivitis, toothaches, mouth sores, and periodontitis

Though studies show the potential uses of noni-fruit juice in several conditions, these studies are insufficient, and there is a need for further research to develop the true scope of the benefits of noni-fruit juice on human health. Additionally, it is essential to consult a doctor before using noni fruit juice for any medical condition.

How to Use Noni Fruit Juice? 

Different types of Noni fruit juice are commercially available based on extraction techniques like traditional and non-traditional.⁴ These include

• Noni beverage
• Noni squash
• Noni syrup.⁴
• It can be used to make freeze-dried pills
• Concentrated extracts
• Powder.¹

You should consult a qualified doctor before using noni fruit juice in large quantities. Do not discontinue or replace an ongoing modern medical treatment with an ayurvedic/herbal preparation of noni fruit juice without consulting an ayurvedic physician. They will guide you with its form and dosage per your health condition.

Side Effects of Noni Fruit Juice:

Noni juice side effects may include:

• Nausea
• Irregular heartbeats
• Muscle weakness
• Hyperkalaemia (high levels of potassium in the blood).​⁴​

Therefore, it is advised to limit the consumption of noni-fruit juice to avoid such side effects. If such side effects appear, consult your doctors, and get proper treatment.