Mother had precancerous colon polyp at 40, father had noncancerous polyp at 40... when should i have first colonoscopy?

It depends on....: You may be at a higher risk for polyps than the average person where colonoscopy is advised at 50 years of age. For high risk it is advised at 40 years. But if you have any symptoms of blood loss or abdominal symptoms anytime, you should get your colon checked before you turn 40. If you want to be free of any anxiety, then do it sooner(now or during this year provided you can handle the expenses.

Lifestyle change: You have colon at age 40, or 10 years younger than the earliest diagnosis in family, whichever comes first, be repeated every five years. Eat a diet low in fat and high in fruits, vegetables, and fiber & Calcium.No ETOH/Cig. smoking,. A recent Canadian population-based case-control study demonstrated a 30% to 40% reduction in CRC risk in patients who underwent screening Colonoscopy.