Bowel cancer—also known as colorectal cancer—is the fourth most common cancer in the UK and is unfortunately on the rise in younger adults, according to the Glasgow Colorectal Centre. The tricky part? Many of its early symptoms are so subtle that people often dismiss them as something minor. But here’s the truth: once bowel cancer spreads, survival rates drop dramatically to just 10%.
Dr. Jack Ogden, a GP at The Lagom Clinic in Bristol, told the Daily Mail that catching these signs early can literally save lives. These symptoms don’t always cause pain—which makes them easy to overlook—but they are just as serious.
Bowel cancer is on the rise in young people (Halfpoint Images / Getty)
Let’s break down the five key signs of bowel cancer that everyone should know about.
1. Unexplained Iron Deficiency Anemia
Feeling constantly tired, looking pale, or experiencing shortness of breath? That could be anemia. While common, in some cases it can be caused by tumors bleeding inside the bowel, leading to blood loss and poor iron absorption. If you’re feeling worn out for no clear reason, don’t brush it off.
2. Changes in Bowel Habits
Constipation, diarrhea, or especially narrow stools might be a red flag. A tumor can partially block the colon, causing stools to become thinner than usual. While diet changes often affect digestion, persistent changes should always be checked.
3. Unexplained Weight Loss
Losing weight without dieting? Cancer can reduce appetite or interfere with nutrient absorption. This type of weight loss is often gradual but noticeable—and it’s a big warning sign.
4. Bloating and Abdominal Pain
That feeling of being bloated, experiencing persistent cramps, or feeling full quickly after eating could be more than just digestive discomfort. Tumors can disrupt normal digestion, making the belly feel uncomfortable or swollen.
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Some signs are brushed off (SimpleImages / Getty)
5. Blood in the Stool
Probably the scariest but most important sign. Blood might look bright red, dark red, or even black if it’s old. Sometimes, it’s only detected through a stool test. While hemorrhoids can also cause blood, it’s never something to ignore.
A Real-Life Story
Devon, a young woman from Seattle, shared her experience with The Patient Story. She noticed changes in her bowel movements, especially “narrow stools,” before being diagnosed with stage 4 colorectal cancer. Although she went through treatment, her cancer returned, showing just how important early detection really is.
Why Awareness Matters
As Dr. Ogden stresses:
“Awareness of these silent signs can save lives. Paying attention to subtle changes and acting promptly is the best defense against colon cancer.”
If you notice any of these symptoms, don’t wait. Speak to your doctor. For more resources, visit the NHS bowel cancer guide or the American Cancer Society.
✅ Takeaway: These signs might not seem alarming at first, but they can make all the difference in catching bowel cancer early. Stay aware, listen to your body, and get checked when something feels off.
