Reuters Health: Weight-loss surgery tied to lowered risk of colorectal cancer

Finding supports what UC researcher has been saying about bariatric surgery

Obese people who have weight-loss surgery may also lower their risk of developing colorectal cancer, according to a report from Reuters Health. Obesity has long been linked to increased risk of colorectal tumors and other types of cancer, as well as a greater risk for chronic illnesses like diabetes and heart disease. Losing weight is thought to reduce these risks.

Reuters Health cited a study from Kuwaiti researcher, Dr. Sulaiman Almazeedi, and interviewed Dr. Daniel Schauer, an assistant professor in the University of Cincinnati Department of Internal Medicine, for a story. Schauer, also a UC Health physician, did not take part in the study, but offered his comments.

The study examined data from seven previous studies that followed more than 1.2 million patients for about seven years, on average. Colorectal cancer was rare: just 638 people developed these tumors during the study.

When people lose weight after bariatric surgery, many changes happen that impact cancer risk, explained Schauer, who was not part of the study.

“Perhaps most importantly for colorectal cancer risk, the body has less inflammation and many of the (tumor) growth factors associated with obesity are decreased,” Schauer told Reuters Health. “These are strongly related to the amount of weight loss.”

Read the Reuters Health story online.

Also check out Dr. Schauer’s research on bariatric surgery and colorectal cancer.

Schauer discusses cancer risk and bariatric surgery

Related Stories

1

Sugar overload killing hearts

November 10, 2025

Two in five people will be told they have diabetes during their lifetime. And people who have diabetes are twice as likely to develop heart disease. One of the deadliest dangers? Diabetic cardiomyopathy. But groundbreaking University of Cincinnati research hopes to stop and even reverse the damage before it’s too late.

2

App turns smartwatch into detector of structural heart disease

November 10, 2025

An app that uses an AI model to read a single-lead ECG from a smartwatch can detect structural heart disease, researchers reported at the 2025 Scientific Sessions of the American Heart Association. Although the technology requires further validation, researchers said it could help improve the identification of patients with heart failure, valvular conditions and left ventricular hypertrophy before they become symptomatic, which could improve the prognosis for people with these conditions.