According to studies, cashew leaves are full of nutrients, vitamins, and antacids that prevent stomach ulcer-causing germs from growing. One study from 2014 lists Helicobacter pylori, an infectious bacterium that thrives in the stomach lining, and high stomach acidity as the two main causes of ulcers. After many experiments, researchers found that cashew leaves contain anacardic acid, an antioxidant that balances out the excess hydrochloric acid in the stomach, creating an alkaline (or neutral) environment and effectively protecting the intestinal wall.
According to a health article published by Sweetish Hill, cashew leaves also contain quercetin glycoside, a chemical compound that aids the production of glycoprotein. To be specific, the glycoprotein is a group of proteins that guards against the development of sores on the gastric lining. Note that the discomfort a patient with an ulcer has is because of these internal sores.
In addition, a microbiologist at Ekiti State University, Nigeria revealed in a 2014 journal that cashew leaves contain hydroethanolic extract suggested to have ulcer-healing properties. This implies that when you chew or boil cashew leaves into tea, it soothes the surface of the lesion in the stomach.
Finally, nutritionists suggest that ulcer patients chew or boil cashew leaves into tea not only for its pain-relieving effect but also for its healing potential. Cheers!