Eucestoda the "broad tapeworm" or "fish tapeworm") and related species. Humans become infected by eating raw, undercooked, or marinated fish acting as a second intermediate or paratenic host harboring metacestodes or plerocercoid larvae. Clinical symptoms are due to the large size of the tapeworm, which often reaches a length exceeding 15 m. The most common symptom is pernicious anemia, caused by the absorption of vitamin B12 by the worm. Other symptoms include various intestinal issues, slight leukocytosis, and eosinophilia. This condition is caused by the plerocercoid larvae of the tapeworm "Spirometra". Humans become infected by drinking contaminated water, eating raw or
National Eating Disorders Association and old, rich and poor, all ethnicities, [and] all socio-economic levels." “The American College of Physicians lists eating disorders as one of the nine most serious problems affecting adolescents and young adults, and anorexia nervosa…as the third most common chronic illness.” In addition, "individuals with eating disorders have the highest mortality rate among any groups affected with mental illness as 20% of people suffering from eating disorders die prematurely from complications related to their eating disorder, including suicide and heart problems." DeBate et al. go on to note that, "anorexia nervosa has the highest mortality rate of any mental illness".