Surgeon Reveals Five Critical Bowel Cancer Symptoms You Must Not Ignore
As Bowel Cancer Awareness Month approaches in April, a leading specialist has issued a vital public health warning about the key symptoms of this common but often overlooked disease. Despite bowel cancer being one of the most prevalent cancers in the United Kingdom, awareness of its warning signs and available screening options remains insufficient among the general population.
Mr Jeremy Clark, a consultant general surgeon specialising in colorectal diseases at Nuffield Health in Brighton, has identified five critical symptoms that should never be dismissed. He emphasises that early detection through prompt medical consultation can dramatically improve treatment success rates and overall prognosis for patients.
1. Blood in the Stool: A Primary Warning Sign
"Passing blood when you go to the toilet is a worrying feature that you should flag to your GP immediately," states Clark. The surgeon explains that the colour of the blood can provide important clues about its origin within the digestive system.
"If you're bleeding from the beginning of your colon, it has to travel three or four feet before it exits with your waste material, so it will turn very dark black. However, if you're bleeding from something lower down in the bowel, closer to your bottom, it will emerge bright red," he clarifies.
Clark stresses that any significant instance of blood in stools, particularly darker-coloured blood or blood thoroughly mixed with faecal matter, warrants immediate medical attention. "Don't wait for that to keep on happening," he advises. Even persistent bright red blood should not be ignored, especially if it continues for more than a week without previous investigation.
2. Changes in Bowel Habits
Sudden alterations in regular bowel patterns represent another crucial warning signal. "If your bowels go from working once a day like clockwork, and then suddenly you're going two or three times a day with looser stools, that's something that needs to be looked into," says Clark.
While increased constipation alone may not be as significant a risk factor, any sudden change that doesn't revert to normal requires medical evaluation. The surgeon notes that temporary disruptions lasting just a day or two are generally not concerning, but persistent changes continuing for several weeks should definitely be reported to a healthcare professional.
3. Abdominal Pain and Discomfort
Bowel cancers can frequently cause abdominal pain, which Clark identifies as potentially appearing at various stages of the disease. "This tends to be a later feature, but it can occur early on, too," he highlights, suggesting that any unexplained or persistent abdominal discomfort should be discussed with a doctor.
4. Persistent Bloating
Many people experience bloating when something is amiss in their digestive system. Clark adds this to his list of symptoms requiring attention, noting that ongoing bloating without obvious cause should prompt medical consultation.
5. Unexplained Weight Loss
Perhaps one of the most concerning symptoms across many serious health conditions, unexplained weight loss can indicate bowel cancer affecting digestive processes. "Bowel cancers can cause you to lose weight by having an impact on how your digestion is working," Clark explains, emphasising that this symptom should always be flagged to medical professionals.
Why Symptoms Often Go Unreported
Clark acknowledges the challenge in symptom recognition, noting that "the problem is that they all cross over with other less serious problems, such as haemorrhoids or irritable bowel syndrome (IBS), so people often ignore or easily dismiss these symptoms."
This overlap with common, benign conditions creates a dangerous tendency to delay seeking medical advice. "We don't want people to be sitting on symptoms for a couple of months, wondering if something is going to change back to normal," warns Clark. "Although bowel cancers usually progress slowly, occasionally they can be more aggressive."
Taking Action: Screening and Medical Consultation
Clark strongly recommends that anyone experiencing these symptoms, or concerned about any unusual bodily changes, should visit their GP without delay. General practitioners frequently provide patients with FIT kits (Faecal Immunochemical Tests) – at-home collection kits with comprehensive instructions for gathering small stool samples that are then sent to laboratories for analysis.
According to NHS guidelines, results typically arrive by post within two weeks of sample submission. The national bowel cancer screening programme offers these FIT kits every two years to individuals aged 50 to 74, regardless of whether they're experiencing symptoms.
"If it comes back as positive, that means there is blood in your stools which needs to be investigated," Clark explains. Positive results trigger referrals to local specialist units for further assessment, potentially including colonoscopy or CT scanning to check for polyps or bowel cancer. "By doing that we pick things up much earlier and they become much more treatable and curable," he concludes, reinforcing the life-saving importance of early detection and intervention.
