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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 younger adults raises the likelihood of a colorectal cancer diagnosis by 8.5 times.

The scientists reached their findings after analyzing 443 patients below 50 who had a colonoscopy at a university health system between 2021 and 2023.

Among the participants, 195 were diagnosed with early-onset colorectal cancer while 248 subjects had normal colonoscopy results.

The scientists said that the vast majority of the young cancer patients had a colonoscopy because of signs, not because of routine screenings.

They added that 70% of the cancer patients had no genetic background of the condition.

Furthermore, people who had smoked in the past were more than 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 major medical conference. The findings have not been published in a peer-reviewed journal.

Bleeding from the Rectum Could Signal Bowel Cancer

The researchers said that their study shows that young adults as well as medical professionals should consider rectal bleeding as a significant indicator of colorectal cancer.

“Many of the young-onset colorectal cancers that I see have no genetic predisposition,” said a specialist and senior author of the research. “This research lends support to the issue of who should or shouldn’t require a colonoscopy: if you have a individual under the screening age with rectal bleeding, you should seriously consider a colonoscopy.”

Experts consulted who were independent in the research concurred with this conclusion.

“Younger individuals with rectal bleeding should get a colonoscopy,” advised a professor of medical oncology. “The hardest message to get across is that colorectal cancer is a disease of younger individuals.”

Another surgical oncologist said that medical professionals should no longer assume that rectal bleeding in younger adults is caused by hemorrhoids.

“Colorectal cancer is a young person’s condition,” he said. “We can not dismiss signs 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 younger adults, thinking that the probability of the signs being caused by colorectal cancer are remote because the individual is under 50,” the specialist noted. “The research findings are not surprising. Persistent rectal bleeding is abnormal and the cause should be immediately investigated.”

A cancer specialist commented that the research is an significant reminder to people below the age of 50.

“Pay attention to any signs,” he said. “This research delivers this message a bit more strongly.”

Colorectal Cancer Cases Increasing in Young Adults

A national cancer institute projects there will be over 150,000 new cases of colorectal cancer identified in the United States this year.

More than one hundred thousand of those cases will be large intestine cancer, while slightly less than fifty thousand will be rectum cancer.

The cases are divided almost evenly between males and females.

Colorectal cancer is the third most common cause of cancer deaths in males and the fourth primary reason in females in the United States. It’s the second most frequent prevalent cause of cancer fatalities in total. Colorectal cancer is projected to cause about 53,000 deaths this year.

The cancer organization states that the incidence of people being diagnosed with colorectal cancer in the United States has been declining about one percent per year since the 1980s. They attribute early screening and changes in daily routines.

Nevertheless, they point out that the downward trend is primarily occurring in older adults. In people below 50, the rate of colorectal cancer diagnosis rose more than 2% per year between 2012 and 2021.

The mortality rate from colorectal cancer has also been declining slightly in the general public, but it has been increasing slightly in individuals under 50.

Actually, colon cancer is the leading cause of cancer death in adults between 20 to 49 in the United States.

An specialist said that people born around 1990 have twice the risk of colorectal cancer relative to people born approximately 1950.

“These risks are increasing and are persisting as people get older, meaning we see an increasing number of diagnoses of colorectal cancer both below and above age 45,” he said.

Medical professionals aren’t certain what is driving the rise in young-onset colorectal cancer, but diet, sedentary lifestyle, and obesity are among the possible factors.

Another specialist mentioned there are additionally some ideas that the overuse of medications as well as swelling in the body may be helping drive up colorectal cancer incidence.

Furthermore, there has also been some study suggesting that gut microbes may additionally play a role.

One specialist suggested that exposure to this type of microbes as a child may cause colorectal cancer to develop twenty to thirty years later.

“We’re still working to understand everything out,” he said.

The Importance of Bowel Cancer Tests Matter

Healthcare professionals say that colorectal cancer is treatable if detected in its initial phases. In advanced phases, it can be deadly.

They say that’s why screenings are vital.

Present recommendations call for men and women to start being screened for colorectal cancer at age 45.

In addition, screenings may be necessary before age 45 if a person has a genetic background of colorectal cancer or has specific health issues such as inflammatory bowel disease (IBD).

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

Colon examinations are generally considered the best screening for colorectal cancer, but alternative methods, such as home test kits, can additionally be used.

Besides rectal bleeding, other signs of colorectal cancer include:

• change in bowel habits
• diarrhea
• constipation
• pain or abdominal pain
• unexplained weight loss

An expert adds that genetic background should not be ignored.

“People should be aware of their genetic background of cancer and any diagnosis of colorectal cancer among relatives should be discussed with their doctor, particularly if relatives were found at a young age,” he said.

Ways to Lower Your Risk of Bowel Cancer

There are a variety of ways a individual can reduce their likelihood of colorectal cancer. These include:

• Healthy diet: Eating patterns high in fat and low in fiber are linked with an higher chance of colorectal cancer. Red and processed meats have been demonstrated to increase the risk. Protein from chicken, seafood, and beans is considered a better option. High-fiber foods, such as fruits, greens, and grains, may lower the probability of colorectal cancer.
• Regular exercise: A leading health institute recommends 2.5 hours of moderate-intensity physical activity a week. {Regular|Consistent