You can check your stool for hidden blood, get colonoscopies (checks whole colon
), or get a combination of flexible sigmoidoscopies (checks part of colon) and stool checks.
Screening should be done between age 50 and 74 unless there is another reason to start earlier or go later. All of these methods work!
a good proven prevention guide by age is an iphone app called my health checklist 2012.