> "parasites are generally a bad thing" There's some evidence to suggest parasitic infection can prevent or reduce some diseases, such as asthma or Crohn's dis

> "parasites are generally a bad thing" There's some evidence to suggest parasitic infection can prevent or reduce some diseases, such as asthma or Crohn's disease. One study published in an ATS journal concluded: "Parasite infections do not in general protect against asthma, but infection with hookworm may reduce the risk of this disease" [1] [1] http://www.atsjournals.org/doi/full/10.1164/rccm.200603-331OC#.V7sSRI7UWfg http://www.atsjournals.org/doi/full/10.1164/rccm.200603-331O...