In What's Eating You? Eugene Kaplan recounts the true and harrowing tales of his adventures with parasites, and in the process introduces readers to the intimately interwoven lives of host and parasite. Kaplan has spent his life traveling the globe exploring oceans and jungles, and incidentally acquiring parasites in his gut. Here, he leads readers on an unforgettable journey into the bizarre yet oddly beautiful world of parasites. In a narrative that is by turns frightening, disgusting, and laugh-out-loud funny, Kaplan describes how drinking contaminated water can cause a three-foot-long worm.