Often eaten raw for its sweet, nutty taste, water caltrop can harbor worms that lead to stomach pain, diarrhea, and even anemia if consumed without proper cooking.
5. Lotus Root
Grown in muddy ponds, lotus root may be contaminated with schistosome eggs and other parasites. Eating it raw allows these organisms to cling to the intestines, potentially causing ulcers, diarrhea, and digestive disorders.