Black walnut benefits, medicinal uses and side effects

Black walnut is a large deciduous tree grows straight and tall to a height of 30-40 meters. In this article, we will talk about Black walnut benefits, medicinal uses and side effects.

Black walnut benefits, medicinal uses and side effects

Other than the nuts, all the other parts of the black walnut tree – the stem, leaves, and husk have an odor. The 30-40 cm long leaves are alternate and compound with a stem. Typically, these are even-pinnate, but there is variety.

It has male flower 8-10 cm long in drooping catkins. The female flowers grow in clusters of 2-5 and are terminal. The male flowers are axillary. Black walnut tree fruit ripens during autumn. The seedlings emerge in April – May.

It’s husk falls in October or November. The nut forms from the female flower. The total lifespan is 120-130 years, and the crop takes 20 years.

Black walnut tree Common names

The common name for this tree is black walnut. The other names are Carya, Green Black Walnut and Jupiter’s nuts.

Black walnut botanical name and family

The botanical name of this tree is Juglans nigra. It belongs to the walnut family, Juglandaceae.

Geological places where Juglans nigra tree grows

It is native to eastern North America. It grows from Ontario to South Dakota, to Georgia, northern Florida, and central Texas. You can find some in Ottawa Valley also.

Black walnut benefits and medicinal uses

Black walnut fruit and flowers

1. Black walnut has digestive benefits

The hull of the black walnut helps heal the inner layer of the intestine. It tones the intestine to improve the digestion and assimilation of the food as it passes through your intestines.

It helps the bowel movement, and so you do not have any food left over in the digestive tract. People with constipation and diarrhea will benefit from having the black walnut hulls. You can also use black walnut husk powder.

2. Green black walnut cures respiratory conditions

For people suffering from sore throat conditions, gargling with the black walnut extract will help alleviate the symptoms. It has an anti-inflammatory nature that helps to soothe the irritation and control the swelling. Put 3-4 drops of the extract in one glass of water. Gargle with this twice or thrice a day. 

3. Black walnut stops sweating

You can reduce excessive sweating by the use of black walnut. The tannin’s have an effect on the sweat glands and keep them from over-functioning. This is due to the astringent action of the tannin’s. You can have the infusion of the black walnut early in the morning on an empty stomach to help improve the effect.

4. Kill Parasites

You can treat all manner of worms with the black walnut. It is a vermifuge and has been in use since the olden days for treating people infected by hookworms, tapeworms, roundworms, and pinworms.

The hulls especially the green ones have a good effect. Grind the hulls and have it with a glass of water. Continue this for two to three days by which time your worms will all be dead and gone. 

5. Boosts immunity

The black walnut is rich in antioxidants. They help in fighting and neutralizing the free radicals. These radicals are responsible for the destruction of the healthy body cells. By preventing the destruction, the black walnuts help to protect us from any infections and diseases. 

6. Black walnut for sore throat treatment

Due to its antibacterial and antiviral nature, you can use the black walnut for treating infections of the throat. Prepare a gargle with the black walnut extract and add two drops to a glass of water. Gargle with this in the morning and evening, and you will be rid of your sore throat. 

7. Good for diabetics

The black walnut shows a tendency to control the sugar levels in the blood. You can have the extract mixed in water twice a day to get good control over the blood sugar levels. The black walnut extract helps improve insulin sensitivity and makes the body cells absorb more glucose. 

8. Black walnut prevents candida

Candida is a problem prevalent in places where you have chlorinated water, high sugar diets, and exposure to stress. It makes your thinking fuzzy and muscles weak. The candida fungus grows inside the intestine.

The toxin it releases joins the bloodstream. This upsets your immune system, and you might have to face a whole load of problems. Taking antibiotics will worsen the condition.

Black walnut has an anti-fungal and probiotic effect that helps rectify the situation. The intestinal environment is changed due to the presence of naphthoquinone juglone and the tannin’s. 

9. Anti-fungal effect

Make a tincture out of the black walnut hull and use it to fight against ringworm, jock itch, and similar fungal infections. The topical application works fine but be sure to test the tincture on your arm first. If you show any allergic reaction, then it is best to avoid it. 

10. Black walnut improves skin conditions

Black walnut has proved beneficial to those who suffer from skin conditions such as psoriasis, eczema, and acne. You can have the tincture both internally and apply it topically. Check for sensitivity and then apply it.

You can check by mixing two drops of the tincture in a cup of water. Apply this on the part of the arm. If there is any allergic reaction, then avoid it. To use it, mix with coconut oil or jojoba oil and apply both in the morning and the evening. You can also cure warts and herpes in this way. 

11. Cardiovascular benefits

The use of black walnut improves the heart health. It reduces the LDL cholesterol and opens the blood vessels. This leads to a drop in the blood pressure and enhances the health of the heart. You can have this by adding two drops of the tincture to a glass of water and drinking it. 

12. Anticancer properties

The hull of the black walnut is shown to retard the growth of cancer cells. This is useful for fighting cancer. You can drink the decoction of the hull twice a day for the best effect.

Side effects of Black Walnut

The short-term oral use of the black walnut is possibly safe. Nut allergies are common so make sure that you are not allergic to nuts before you eat the black walnut. There is no evidence that the long-term use is dangerous.

There is evidence that the juglone in the black walnut could cause lip and tongue cancer. So, you must take care not to apply it directly on the skin.


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Anoop Sharma

About Anoop Sharma

Anoop Sharma is an IT professional, freelance health writer and creator of He is passionate about helping others learn about health issues and their natural remedies, yoga and healthy food.

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