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Rectal bleeding is a telltale sign that young adults may have colorectal cancer, based on a new study.

Researchers found that rectal bleeding in individuals under 50 raises the likelihood of a colorectal cancer diagnosis by 8.5 times.

The scientists arrived at their conclusions after examining 443 patients under 50 who underwent a colonoscopy at a university health system between 2021 and 2023.

Among the participants, nearly 200 were diagnosed with young-onset colorectal cancer while the remaining individuals had clear colonoscopy findings.

The researchers said that 88% of the young cancer patients underwent a colonoscopy because of signs, not because of regular check-ups.

They further stated that a significant percentage of the cancer patients had no family history of the disease.

In addition, people who had used tobacco in the past were over two times as prone to develop early onset colorectal cancer as people who were non-smokers.

The researchers’ research was shared this week at a professional gathering. The findings have not been published in a peer-reviewed journal.

Bleeding from the Rectum May Indicate Bowel Cancer

The researchers said that their study shows that young adults as well as healthcare providers should take rectal bleeding as a significant sign of colorectal cancer.

“Many of the young-onset colorectal cancers that I see have no genetic predisposition,” said a specialist and lead researcher of the research. “This research adds weight to the question of who should or shouldn’t warrant a colonoscopy: if you have a person below the screening age with rectal bleeding, you should strongly think about a colonoscopy.”

Specialists interviewed who were not involved in the study agreed with this conclusion.

“Younger individuals with rectal bleeding should get a colonoscopy,” said a professor of medical oncology. “The hardest message to get across is that colorectal cancer is a condition of young people.”

Another surgical oncologist said that medical professionals should not assume that rectal bleeding in younger adults is caused by piles.

“Colorectal cancer is a young person’s disease,” he commented. “We can not dismiss symptoms such as rectal bleeding in young adults.”

A leading expert of cancer screening research at a major cancer organization agrees.

“Doctors often downplay signs of colorectal cancer in individuals under 50, believing that the probability of the signs being caused by colorectal cancer are unlikely because the individual is too young,” the specialist noted. “The research findings are expected. Ongoing rectal bleeding is not normal and the source should be immediately investigated.”

A medical oncologist commented that the study is an significant warning to people below the age of 50.

“Don’t ignore any signs,” he said. “This research sends this warning a little louder.”

Bowel Cancer Instances Increasing in Younger Individuals

A major cancer organization estimates there will be over 150,000 diagnoses of colorectal cancer diagnosed in the United States this year.

Over one hundred thousand of those cases will be colon cancer, while slightly less than 50,000 will be rectum cancer.

The diagnoses are divided roughly equally between males and women.

Colorectal cancer is the third-leading cause of cancer-related deaths in men and the fourth leading cause in females in the United States. It’s the second most common cause of cancer fatalities in total. Colorectal cancer is projected to cause about 53,000 deaths this year.

The cancer organization states that the rate of people being found with colorectal cancer in the United States has been decreasing approximately one percent per year since the mid-1980s. They attribute early screening and improvements in lifestyle habits.

However, they point out that the decrease is mostly occurring in individuals over 50. In people under 50, the rate of colorectal cancer diagnosis increased more than two percent per year between 2012 and 2021.

The death rate from colorectal cancer has additionally been decreasing moderately in the general public, but it has been rising slightly in individuals under 50.

In fact, colon cancer is the primary reason of cancer-related death in adults ages 20 to 49 in the United States.

An expert noted that people born approximately 1990 have double the likelihood of colorectal cancer relative to people born around 1950.

“These dangers are increasing and are persisting as people age, meaning we see an increasing number of diagnoses of colorectal cancer before and after age 45,” he said.

Doctors are unsure what is causing the rise in early onset colorectal cancer, but nutrition, sedentary lifestyle, and excess weight are among the suspected factors.

Another expert mentioned there are also some theories that the excessive use of antibiotics as well as swelling in the body may be helping drive up colorectal cancer rates.

In addition, there has additionally been some research indicating that gut microbes may also be involved.

One specialist said that exposure to this kind of bacteria as a youngster may cause colorectal cancer to develop twenty to thirty years later.

“We’re still trying to figure all this out,” he commented.

The Importance of Colorectal Cancer Screenings Matter

Medical experts say that colorectal cancer is treatable if caught in its early stages. In advanced phases, it can be fatal.

They say that’s why examinations are vital.

Present guidelines suggest men and women to start being screened for colorectal cancer at age 45.

Furthermore, tests may be required before age 45 if a individual has a family history of colorectal cancer or has specific health issues such as inflammatory bowel disease (IBD).

It’s recommended that colonoscopy examinations be done every 10 years for people with no family history of the condition and no polyps found during the exam. The time between tests can be shorter for other patients.

Colon examinations are generally regarded as the most effective screening for colorectal cancer, but alternative methods, such as home test kits, can also be used.

In addition to rectal bleeding, other signs of colorectal cancer include:

• alteration of bowel habits
• diarrhea
• constipation
• pain or abdominal pain
• unexplained weight loss

An specialist adds that genetic background should not be overlooked.

“People should know their family history of cancer and any diagnosis of colorectal cancer among relatives should be talked about with their doctor, particularly if family members were diagnosed at a young age,” he said.

How to Lower Your Risk of Colorectal Cancer

There are a number of ways a person can reduce their likelihood of colorectal cancer. Among them:

• Healthy diet: Diets rich in fat and low in fiber are linked with an increased chance of colorectal cancer. Beef and processed foods have been shown to increase the risk. Nutrition from chicken, seafood, and beans is considered a better option. High-fiber foods, such as fruits, greens, and cereals, may decrease the risk of colorectal cancer.
• Physical activity: A major cancer research organization suggests 2.5 hours of moderate-intensity physical activity a week. {Regular|Consistent