Aliyense akhoza kutenga polyps m'matumbo. Komabe, zinthu zina zowopsa zimakhala ndi gawo lalikulu pamawonekedwe awo:

- Khalani ndi zaka zopitilira 50,

- Khalani ndi wachibale woyamba yemwe ali ndi khansa ya colorectal,

- Mwakhala kale ndi khansa ya colorectal nokha,

- Munayamba mwakhalapo ndi matumbo am'mimba,

- Khalani m'banja lomwe lili ndi mabanja ambiri,

- Kudwala matenda otupa m'matumbo, monga Crohn's disease ndi ulcerative colitis (ulcerative colitis).

- onenepa kwambiri kapena onenepa; 


- Kusuta komanso kumwa mowa kwambiri; 


- Zakudya zokhala ndi mafuta ambiri komanso zakudya zochepa zama fiber; 


- Moyo wongokhala; 


- Kukhala ndi acromegaly kumachulukitsa ndi 2 mpaka 3 chiopsezo cha adenomatous polyp ndi khansa ya m'matumbo.