No need to bust out a magnifying glass: The key to spotting colon trouble is “knowing your bowel habits,” says Felice Schnoll-Sussman, M.D. Internalize this symptom primer, and call your doctor if anything new and unusual sticks around for several weeks.
Bright-red blood in the toilet bowl or on your TP post-pooping. It could indicate a small anal tear or a typically harmless hemorrhoid.
Darker blood (think maroon or almost black) that’s intertwined with stool might signal colon bleeding.
A stretch—even a week or two—of constipation or straining. Yes, we mean pushing like a pro with little to show for it. Hint: You might be dehydrated.
Out-of-nowhere or prolonged constipation (longer than a month), together with narrow or pencil-like stools, which could mean a roadblock in the colon.
Cramping or bloating that makes it hard to button your jeans.
Daily pain fierce enough to interrupt your sleep or force you to change your routine. Whether it’s cancer-caused or not, see your M.D., stat.
Source – Yahoohealth