Scientifically known as Parkia biglobosa, locust bean is an aromatic local seasoning widely used in preparing soups and stews across in West Africa. It is called ‘iru‘ by Yorubas, ‘ogiri‘ by Igbos, and ‘dawa dawa’ by Hausas. It is also known as Irú or Eware among the Edo people of Nigeria. Locust beans are cultivated from a perennial deciduous tree found in Africa. [1]

It is worthy to note that locust bean isn’t just a culinary condiment, as it is associated with myriads of health benefits, has valuable nutritional properties and numerous uses.

This article contains the nutritional contents of locust beans, uses of locust beans and health benefits of locust beans.

Uses of locust beans (Iru)

Iru is mainly used as a condiment for cooking. Yorubas classify iru into two types: Iru Woro, which is commonly used to make stew, and Iru Pete, which is used to make ewedu and egusi soup. [2]

The leaves of the locust beans tree are also used to wrap moi moi. Also, the and the seeds are also as animal feed for livestock and poultry. [3]

The plant is also used is some parts of Africa to treat wounds, hypertension, malaria and bacterial infections, because it is said to contain medicinal properties.

Nutritional Contents of Locust Beans (Iru)

Locust beans are high in lipids, proteins, carbohydrates, fats and calcium.

It also contains a good amount of essential nutrients such as potassium, ascorbic acid, phosphorus, tannin, phytate, oxalate, among others. 

A study in 2007 on the Nutritional Composition of the African locust bean arrested to the facts above. It also showed that locust beans contained a fair amount of saponins, phenols and ascorbic acids. The nutritional value of locust beans indicates that it is an excellent source of macro and micro-nutrients. [4]

Health Benefits of Locust Beans (Iru)

Without further hesitation, below are some surprising health benefits of locust bean:

1. Reduces risk of diabetes 

Locust beans are capable of reducing your risk of diabetes. In recent studies, it was discovered that there is a significant relationship between the aqueous and methanolic extracts of locust beans and cholesterol levels.

That is, the natural condiment is effective in increasing the levels of ‘good’ HDL cholesterol while lowering that of ‘bad’ LDL cholesterol in the body. 

In a similar study published in the journal, Clinical and Experimental Pharmacology, and Physiology, it was shown that the blood sugar-lowering the effect of locust beans could be likened to the one exhibited by glibenclamide, a reference anti-diabetic drug. [5]

Additionally, some set of researchers at the Department of Chemical Pathology, College of Health Sciences Ladoke Akintola University of Technology, Osogbo, discovered that locust beans is not only good for protecting against some diabetes complications but also helps in accelerating weight loss and reducing the risk of ischaemic heart diseases.  [6]

2. Regulates cholesterol level

Regular locust beans intake is considered one of the natural ways of regulating your cholesterol levels. This is because the natural condiment contains certain antioxidant and hypolipidaemic properties that interfere with the cholesterol in the body to strike the right balance. 

In support of the above, a study published in The American Journal of Clinical Nutrition a few years ago stated that locust bean gum could help lower cholesterol as its hypolipidemic effect was being tested in familial hypercholesterolemic adults and children. [7]

3. Promotes healthy sight 

Locust bean is an excellent source of Vitamin A, which promotes good eyesight alongside bone growth and immune system. 

Vitamin A in locust beans is one of the essential vitamins your eyes need to function properly. 

You can reduce your chances of developing eye conditions such as night vision, cataracts, and xerophthalmia – simply by increasing your locust beans intake. 

Vitamin A in locust beans also helps in reducing the risk/effects of eye infections, minus eyes, myopia, glaucoma, etc.

That’s not all, and it will interest you to know that there are some medicines in which the roots of the locust bean are being used as part of the major ingredients, showing how effective this natural condiment is. 

4. Treats hypertension

Hypertension, otherwise known as high blood pressure, occurs when the pressure of blood pumped through the arteries is relatively higher than expected. One thing about this health condition is that it is a silent killer, meaning you may never be aware that you have it even for several years unless you go for checkups. 

Consumption of locust beans has been said to prevent and treat hypertension. This is because the seeds of the condiment are found to be rich in antihypertensive properties. The leaves of locust beans also contain procyanidin, another component proven to be effective in lowering blood pressure in humans. [8]

5. Remedy for diarrhea

Diarrhea occurs when you have a sudden increase in the frequency, looseness, and volume of your faeces. 

Locust bean contains tannins and pectin, both of which are recommended most times for people with diarrhoea. 

In addition to the above, Nyandanu et al., 2017 stated in their research that the Leaves, bark, roots, and fruit of African locust bean could be prepared as a local remedy for treating myriads of health conditions, such as fever, diarrhoea, stomach problems, boils, and burns. 

In support of this claim, Sina and Traoré, 2002 in their study also revealed that the bark of locust bean can be used locally for treating a wide range of diseases, including diarrhoea, sterility, bronchitis, pneumonia, leprosy, skin irritations, inflammation, parasitic worms, to mention but a few. 

6. Excellent for gum health 

The mouth is packed with legions of bacteria. Although some are harmless, yet there are some that can attack the teeth and gums to cause certain infections. 

However, one of the best ways to prevent /treat gum-related diseases is by consuming locust beans. 

These natural condiments contain some properties that are very helpful in healing mouth ulcers and relieve receding gums while also inhibiting the growth of bacteria, causing tooth decay in the mouth.

There are also African countries (such as Cote d’Ivoire) where the bark of locust bean is being infused, soaked and boiled to prepare local mouth wash for steaming and relieving toothache. 

7. Antimicrobial properties

According to a 2007 study, locust beans may likely possess antimicrobial properties that are effective in inhibition the growth of harmful microorganisms.

Locust beans and fertility

Many people have been asking online if there’s a link between locust beans and fertility. There’s not major scientific evidence to support that locust beans can boost fertility. However, foods that are extremely high protein (plant-based protein), such as locust beans can increase fertility. [9]

Bottom Line

Locust Beans is a healthy condiment used to prepare dishes in Nigeria. The health benefits of locust beans include preventing hypertension, preventing diabetes, promoting good eyesight, as well as having antimalarial and antibacterial properties.

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