Introduction

Moringa leaf extract has gained widespread attention for its high nutritional profile and possible health benefits, particularly in supporting digestive health issues. Moringa leaf extract is now used for several medical purposes. 

This article discusses moringa, including its nutritional benefits, numerous forms, the impact it has on digestive health and potential side effects.

What is moringa?

Moringa leaf extract is obtained from the leaves of the Moringa oleifera tree, which belongs to the Moringaceae family and is native to parts of Asia and Africa. Although there are 13 species of Moringa, Moringa oleifera is the most extensively studied and commonly used species.¹ The leaves of the Moringa tree are a popular option for various health applications due to their remarkable concentrations of vitamins, minerals, antioxidants, and bioactive substances (see Table 1). In addition to that, almost every part of the plant, including seeds, bark, roots, fruit and immature pods, has been valued for a wide range of health benefits and traditional uses.¹ This is because Moringa contains antibacterial and antioxidant properties used to reduce inflammation related to gastrointestinal diseases such as inflammatory bowel (IB)disease.

Table 1. Illustrating the nutritional value in comparison to other food sources^2,3

The importance of digestive health

The gut microbiota is a key component of the intestinal mucosal barrier, playing a vital role in maintaining healthy gut function.⁴  Its stability is key to overall well-being. Various factors can influence the gut microbiota, including:⁵

• Unbalanced and unhealthy diets
• The presence of  both beneficial and pathogenic microbes within the intestine

The gut microbiota is made up of trillions of microorganisms, including bacteria, viruses, fungi, and others, all of which coexist in a delicate balance. These microorganisms are essential for various crucial functions, such as the digestion of dietary fibres, the synthesis of essential vitamins, the training of the immune system, and preventing harmful pathogens from colonising the gut. Therefore, maintaining stability and diversity in the gut microbiota is crucial as an imbalance, known as dysbiosis, can lead to various health issues, ranging from digestive disorders to chronic diseases and even mental health conditions.⁴ 

Moringa leaf extract is an effective natural remedy that offers potent benefits for digestive health, primarily through its impact on the gut microbiota. This extract has a high content of antioxidants, anti-inflammatory compounds, as well as antibacterial properties that help maintain a healthy intestinal barrier, promoting the growth of beneficial bacteria while inhibiting pathogenic ones.⁵ By fostering a balanced gut microbiome, Moringa leaf extract aids in the elimination of toxins and encourages regular bowel movements, As a result, maintaining a balanced gut microbiome not only supports the body’s natural detoxification processes and helps prevent constipation, but also contributes to more efficient waste elimination, reduced toxin buildup, and overall digestive health.

Nutritional composition of moringa leaf extract

Moringa leaf extract is a highly nutritious substance, containing substantial amounts of vitamins A, C, and E, along with minerals like calcium, magnesium, and potassium shown in Table 2. Moreover, it is packed with antioxidants such as flavonoids and polyphenols, which aid in fighting against oxidative stress and inflammation in the digestive system.

Table 2. Illustrating the nutritional content of Moringa oleifera per 100g⁶ 

Mechanism of action

Moringa leaf extract offers multiple benefits for digestive health through several mechanisms of action. Moringa oleifera contains anti-inflammatory properties that are key in alleviating symptoms associated with the gastrointestinal tract. The phytochemicals present in moringa leaves, such as quercetin, kaempferol, and chlorogenic acid, have been shown to have the ability to reduce inflammation and tissue damage in conditions like ulcerative colitis and gastritis. These compounds work by suppressing proinflammatory cytokines and inhibiting key inflammatory signalling pathways, which are central to the development of inflammatory gut disorders.⁷

Furthermore, Moringa contains antimicrobial properties used to combat pathogenic bacteria such as Helicobacter pylori, the primary bacterium responsible for gastric ulcers and other gastrointestinal infections.⁸ Due to the presence of phytocomponents such as terpenoids, sterols, flavonoids, alkaloids and phenols, they exhibit gastroprotective effects. This inhibits the growth of harmful bacteria while sustaining the growth of beneficial strains. Moringa leaf extract has also been found to regulate the composition and diversity of the gut microbiota. This promotes the growth of beneficial bacteria such as Bifidobacterium and Lactobacillus species, which contain probiotic effects.⁵ These probiotics help to maintain a balanced gut microbiome, which is essential for optimal digestive function and nutrient absorption.  

Overall, the diverse bioactive compounds in Moringa leaf extract can help support digestive health by reducing inflammation, fighting microbial pathogens, and promoting a healthy gut microbiota.

Research and evidence 

An investigation into the medicinal potential of Moringa oleifera for gastrointestinal disorders was carried out on the plant's anxiolytic and antioxidant properties in acetic acid-induced colitis in rats.⁹ In this study, a total of 36 rats were randomly assigned to six groups. Each group received a specific treatment for 20 days: one group was given distilled water, another received loperamide (5 mg/kg), and the remaining groups were administered Moringa oleifera leaf aqueous extract at doses of 25, 50, or 100 mg/kg. As a result, rats receiving 100 mg/kg of Moringa oleifera have shown improvement in colitis symptoms. Additionally, it was shown to have reduced the rat’s colon weight/length ratio. Furthermore, extract-treated rats exhibited potent antioxidant effects. This was evident by an elevation of a protective antioxidant substance at 100 mg/kg and an increase of antioxidant enzymes in the blood at a lower dose of 50 mg/kg of extract.⁹ 

These results suggest that leaf extract from Moringa oleifera reduces colitis-related anxiety as well as its physical symptoms. This study is encouraging as it shows its potential as an alternative source for creating medications to lessen ulcerative colitis symptoms.

Practical application and dosage

Moringa leaf extract is available in various forms, including:

• Moringa tea
• Moringa seed oil
• Moringa Leaf powder
• Moringa Supplements or capsules

There is less risk when it comes to overconsuming the leaves of the Moringa tree. The optimal dosage for Moringa leaf extract appears to be 68-90 milligrams per pound of body weight.

Potential risks and side effects of moringa

The moringa leaf is safe to consume as all parts of the plant are edible. Currently, there are no known side effects when taken within recommended doses.

Summary

Moringa leaf extract shows that it is a promising herbal plant for improving digestive health due to its rich nutritional composition and various health benefits. Although further investigation is required to completely comprehend its modes of action and ideal application, initial findings indicate that moringa leaf extract could provide noteworthy advantages for people looking to enhance their digestive health.