Welcome to Gastrodoxs.com! Today we’re looking at an important topic: the connection between diabetes and colon cancer.
If you’ve ever asked:
You’re in the right place. We’ll explain it all—with help from Houston-based GI expert Dr. Bharat Pothuri.
Diabetes happens when your body can’t manage blood sugar properly. There are two main types:
Most adults have type 2 diabetes. Over time, high blood sugar can harm organs, nerves, and blood vessels.
“Diabetes isn’t just about sugar,” says Dr. Pothuri. “It affects many parts of the body, including the colon.”
Colon cancer, also known as colorectal cancer, starts in the large intestine or rectum. It often begins as small growths (polyps) that can turn into cancer over time.
Learn more: CDC Colon Cancer Screening Guide
Studies show that people with type 2 diabetes have a 20–30% higher chance of getting colon cancer.
“Diabetes doesn’t mean you’ll get colon cancer,” says Dr. Pothuri. “But it raises your risk—so screening matters.”
Here’s a simple breakdown of the diabetes and colorectal cancer connection:
Learn more at NIH – Diabetes and Cancer
Diabetes can affect colon health in several ways:
“In Houston’s hot weather, people struggle to stay on healthy diets,” says Dr. Pothuri. “We help create plans that support both blood sugar and colon health.”
“If you have diabetes, don’t skip your screenings,” says Dr. Pothuri.
“We often begin colonoscopies earlier for patients with type 2 diabetes.”
“Healthy weight, good food, regular movement, and stable sugar levels go a long way.”
“Houston has amazing resources—just ask your local Gastrodoxs team for help.”
Good habits can protect you from both colon cancer and diabetes problems.
Tip: The Houston Gastroenterology Center offers walk-in screenings and workshops on sugar control.
| Factor | Without Diabetes | With Type 2 Diabetes |
| Colon Cancer Risk | Baseline | 1.2–1.3× higher |
| Insulin Levels | Normal | High |
| Inflammation | Low | Chronic |
| Gut Motility | Normal | Slower |
| Screening Age | 50+ | 45+ (or earlier if needed) |
Diabetes and colon cancer are connected—but the risks aren’t set in stone.
If you have type 2 diabetes, you may face a higher risk. But with regular screenings, better food choices, exercise, and blood sugar control, you can take charge of your health.
At Gastrodoxs, Dr. Bharat Pothuri and our Houston team are here to help. Let’s build a plan that works for you.
Please share this post with friends and family in Houston and beyond. By learning more about the diabetes and colon cancer connection, we can take steps to stay healthy—together.
Dr. Bharat Pothuri is a Board-Certified Gastroenterologist and Hepatologist. With extensive experience in digestive health, he specializes in advanced endoscopic procedures, chronic GI disorder management, and preventive care. Dr. Pothuri is dedicated to providing expert, patient-focused insights to help improve gut health and overall well-being.
No. It raises your risk but doesn’t mean you’ll get it.
If you have type 2 diabetes, start around age 45—or earlier if needed.
Yes. It helps lower inflammation and insulin spikes.
Usually every 10 years, but your doctor may recommend more.
High-fiber foods, fruits, veggies, lean protein, and fewer processed meats.
It may raise risk, but not as much as type 2 diabetes.
Yes! It lowers insulin resistance and inflammation.
Blood in stool, belly pain, weight loss, or bowel changes.
It increases insulin resistance and inflammation—both raise cancer risk.
Visit Gastrodoxs for screening and support.
