13 Warning Signs Of A Possible Cancer You Should Never Overlook

#1 – Changes in Bowel Functions

Blood in the stool (which can look like very dark or black stool) could be a sign of colon or rectal cancer. These are very common types of cancer and happen more often than you might think. Long-term constipation, diarrhea, or a change in the size of the stool may be a sign of colon cancer and should be taken very seriously.