Walnuts are a crunchy and healthy snack that people of all age groups can enjoy easily. Read on to know about the harmful effects of consuming walnuts.

Walnuts are a healthy food product that provides various vital nutrients to our body. However, walnuts can also harm our body. Here are 10 side effects of consuming walnuts about which you might not be aware.

May increase body weight. According to some studies, walnut consumption may result in weight gain as it is high in energy.


Allergy. Over consumption of walnuts may trigger an allergic reaction in some people.

Swelling and rashes. People who are sensitive to nuts may suffer from rashes and swelling all over the body after consuming too many walnuts.

Diarrhea. Walnut consumption may trigger diarrhea and one must consult a doctor to prevent these side effects.

Nausea. Walnuts contain antibodies that can stimulate white blood cells to produce histamine. The histamines trigger allergic reactions such as stomach pain, nausea, and diarrhea after consuming the walnuts.

During pregnancy. Walnuts are not safe to be consumed by pregnant and lactating women who are known to have walnut allergies, especially the black walnuts.

Lip cancer. Walnuts contain a chemical known as juglone, which if applied directly on the skin daily can cause lip cancer.

Asthma. Walnut sensitive people may also suffer from asthma.

Swelling of the throat. People complaining of walnut allergy may experience throat, lung, and tongue swelling, making it difficult for them to breathe. If timely medical attention is not provided, it may even lead to death.

Acne. Walnut leaf if applied topically on the skin, may trigger eczema, ulcer, acne, and other skin infections.