Horseshoes, or water chestnuts, can be eaten raw. If you need to eat horseshoes raw, it is recommended that you peel them thoroughly and rinse them with water before eating them. Horseshoe is an aquatic plant that grows in swampy mud or paddy fields, and the epidermis may have a large number of bacteria and parasite eggs attached to it, especially ginger sucking worm cysts. Eating raw, unwashed horseshoes is likely to cause abdominal pain, diarrhea and other discomforts. Eat raw horseshoes should be thoroughly peeled and rinsed with water before consumption. If the surface of water chestnuts is attached with ginger sucker cysts, after being eaten by mistake, the cysts will enter the intestinal tract, decapsulate into larvae in the duodenum, and the larvae will develop into adult worms and spawn in the small intestine after a period of 1~3 months, which will jeopardize the health of human beings, and will lead to symptoms of loss of appetite, abdominal pain, nausea and vomiting, and malnutrition. If abdominal pain occurs when eating raw horseshoes, you should seek medical attention as soon as possible.