A farkon bayyanar cututtuka da alamun cututtuka sun haɗa da kumburi, zub da jini na al'ada, tari mai tsawo, asarar nauyi da ba a bayyana ba, da canji a cikin motsin hanji. Yayin da waɗannan alamun na iya nuna cutar kansa, suna iya samun wasu dalilai. Fiye da nau'ikan 100 na kansar suna shafar mutane. Shan taba shine dalilin kusan kashi 22% na mutuwar kansa. Sauran kashi 10% sun kasance saboda kiba, rashin abinci mai kyau, rashin aikin jiki ko shan giya da yawa. Sauran dalilai sun haɗa da wasu cututtuka, haɗuwa da ionizing radiation da gurɓataccen muhalli. A duniya, kashi 15% na cututtukan daji sun kasance saboda cututtuka kamar Helicobacter pylori, hepatitis B, hepatitis C na mutum, cutar papilloma, cutar Epstein, da kuma ciwon daji.
Kashi 80 cikin dari