2 Answers

See here for one source:     http://coloncancer.about.com/od/coloncancerbasics/a/colcansymptoms.htm

Numerous individuals with colon disease experience no indications in the early phases of the infection. When symptoms seem, they’ll likely vary, depending on cancer location and cancer size in large intestine.

The signs and symptoms of Colon cancer

A change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool

Rectal bleeding or blood in your stool

Persistent abdominal discomfort, such as cramps, gas or pain

A feeling that your bowel doesn't empty completely

Weakness or fatigue

Unexplained weight loss

To reduce your colon cancer risk follows few steps for a healthy Colon

Take rich fiber food

Proper Nutrient Food

When you eat anything add garlic into it

Drink more water as much you can don’t count how much your drinking

Vitamin D you can get in by many sources if you stand in sun for 15-20 min’s exposure is a sufficient for healthy Colon

Exercise

After having dinner walk for 15-20mins

These few steps surely changes you’re daily life for a healthy colon