Ulceration, necrosis, perforation, fistulae, volvulus, obstruction, and peritonitis
I have no clue what those words mean but you probably die from one of them
"Due to their powerful attractive force, an ingested neodymium magnet is capable of repositioning intestines and finding another magnet or piece of metal through up to 6 layers of bowel wall leading to serious consequences such as ulceration, necrosis, perforation, fistulae, volvulus, obstruction, and peritonitis."