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Bleeding from the rectum is a telltale sign that young adults may have colorectal cancer, according to a new study.

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

The researchers arrived at their conclusions after analyzing 443 patients under 50 who had a colonoscopy at a university health system between 2021 and 2023.

Among the participants, nearly 200 were found with early-onset colorectal cancer while the remaining subjects had normal colonoscopy findings.

The scientists said that 88% of the younger individuals with cancer underwent a colonoscopy because of symptoms, not because of routine screenings.

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

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

The researchers’ research was shared this week at a professional gathering. The results have yet to be released in a scientific publication.

Bleeding from the Rectum Could Signal Colorectal Cancer

The researchers said that their study shows that individuals under 50 as well as healthcare providers should take rectal bleeding as a important indicator of colorectal cancer.

“Many of the early-onset colorectal cancers that I encounter have no genetic predisposition,” commented a specialist and lead researcher of the study. “This study adds weight to the issue of who should or shouldn’t require a colonoscopy: if you have a person below the screening age with rectal bleeding, you should strongly think about a colonoscopy.”

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

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

Another cancer surgeon said that doctors should no longer presume that rectal bleeding in younger adults is caused by hemorrhoids.

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

A leading expert of cancer screening science at a major cancer organization concurs.

“Physicians often minimize symptoms of colorectal cancer in younger adults, believing that the probability of the signs being caused by colorectal cancer are unlikely because the individual is too young,” the expert noted. “The study results are not surprising. Ongoing rectal bleeding is abnormal and the source should be promptly investigated.”

A medical oncologist commented that the research is an important reminder to people below the age of 50.

“Don’t ignore any symptoms,” he advised. “This research sends this message a little louder.”

Bowel Cancer Cases Increasing in Young Adults

A major cancer organization projects there will be more than one hundred fifty thousand diagnoses of colorectal cancer diagnosed in the United States this year.

More than 100,000 of those cases will be colon cancer, while just under fifty thousand will be rectum cancer.

The cases are split almost evenly between men and women.

Colorectal cancer is the third most common cause of cancer deaths in men and the fourth most common primary reason in women in the United States. It’s the second most common cause of cancer fatalities overall. Colorectal cancer is expected to cause approximately 53,000 deaths this year.

The institute reports that the incidence of people being found with colorectal cancer in the United States has been declining approximately one percent per year since the mid-1980s. They credit early screening and changes in lifestyle habits.

Nevertheless, they note that the downward trend is mostly occurring in older adults. In people under 50, the rate of colorectal cancer detection rose more than two percent per year between 2012 and 2021.

The death rate from colorectal cancer has additionally been declining moderately in the overall population, but it has been increasing slightly in individuals under 50.

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

An expert said that people born around 1990 have double the likelihood of colorectal cancer compared with people born around 1950.

“These dangers are increasing and are carried forward as people get older, meaning we observe an increasing number of diagnoses of colorectal cancer both below and above age 45,” he said.

Doctors aren’t certain what is causing the rise in early onset colorectal cancer, but diet, sedentary lifestyle, and obesity are among the suspected factors.

Another expert said there are also some ideas that the overuse of antibiotics as well as inflammation in the body may be helping increase colorectal cancer incidence.

In addition, there has additionally been some research indicating that gut microbes may also play a role.

One expert said that exposure to this type of bacteria as a child may cause colorectal cancer to develop twenty to thirty years later.

“We’re continuing to trying to figure everything out,” he said.

Why Colorectal Cancer Screenings Matter

Healthcare professionals say that colorectal cancer is treatable if caught in its initial phases. In later stages, it can be fatal.

They emphasize that’s why examinations are vital.

Current guidelines call for males and females to begin being screened for colorectal cancer at age 45.

In addition, tests may be required prior to age 45 if a person has a genetic background of colorectal cancer or has specific medical conditions such as bowel inflammation.

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

Colonoscopies are typically regarded as the most effective screening for colorectal cancer, but other tests, such as at-home stool kits, can also be used.

Besides rectal bleeding, additional symptoms of colorectal cancer include:

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

An specialist notes that family history should never be ignored.

“People should know their genetic background of cancer and any identification of colorectal cancer among relatives should be discussed with their physician, especially if family members were found at a early age,” he said.

How to Lower Your Risk of Bowel Cancer

There are a number of ways a person can lower their risk of colorectal cancer. Among them:

• Balanced nutrition: Eating patterns high in fat and low in dietary fiber are associated with an higher risk of colorectal cancer. Beef and processed foods have been shown to increase the risk. Nutrition from poultry, seafood, and beans is considered a better option. Fiber-rich items, such as produce, vegetables, and grains, may decrease the probability of colorectal cancer.
• Physical activity: A major health organization suggests two and a half hours of moderate-intensity physical activity a week. {Regular|Consistent