What Exactly Is Colon Cancer?
Colon Cancer, or broader Colorectal cancer, also called bowel cancer, is a cancer that develops in the large intestine or rectum. It often starts from benign colon polyps in the inner lining, which can become cancerous over time. There are several types, with adenocarcinoma being the most common.
Colorectal cancer can affect people of all ages, but the risk increases with age and is more common in older adults. Statistically, men are affected more often than women. Early detection and treatment are crucial for the best chance of cure and to prevent cancer from spreading.
Colon Cancer Symptoms at a Glance
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Changes In Bowel Movements
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Blood In Stool
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Pencil Thin Stools
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Unexplained Abdominal Pain
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Persistent Pressure In The Intestines
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Unintentional Weight Loss
Colon Cancer Screening Conveniently From Home
In everyday life, it is easy to postpone preventive care. That is why we focus on services you can use from home. Discover our selection of stool tests for colorectal cancer screening, including options similar to a faecal immunochemical test, and support earlier detection.
Advanced Symptoms Of Colon Cancer: What Happens In The Body?
In advanced stages, colorectal cancer can cause more pronounced symptoms as the tumor grows larger or has spread to other organs. The following symptoms often occur:
- Bowel obstruction (ileus), with severe abdominal pain, nausea, and vomiting
- Severe bleeding in the intestines, which can lead to anemia and low red blood cells
- Metastases, for example in the liver or lungs, with new symptoms such as breathlessness caused by low red blood cells
- Severe weight loss and loss of appetite
- General weakness and decline in performance
At this stage, people often only start to describe clear symptoms. Earlier diagnosis could have prevented many complications. Treatments such as chemotherapy and radiation therapy, and in some cases targeted therapy, can improve quality of life, support the health care team’s treatment plan, and extend life expectancy. In later stages, palliative care may also help manage symptoms and maintain comfort.
Blood In The Stool Often Only Appears In Advanced Stages
Blood in the stool is one of the most well known and worrying colorectal cancer symptoms. However, it often appears only once the tumor has already reached a certain size. Blood is not always visible. Occult bleeding may go unnoticed but can be detected with stool based screening and other tests.
There are many causes of blood in the stool. Besides colon cancer, swollen blood vessels such as hemorrhoids, inflammation, or anal fissures can also be responsible. A doctor’s assessment is essential to determine the cause and decide on further tests.
It also matters what the blood looks like. Bright red blood may be linked to the lower bowel or back passage, while dark red blood can suggest bleeding higher in the digestive tract. Blood in the stool is never normal and should always be taken seriously.
Do The Symptoms Of Colon Cancer Differ Between Men And Women?
In general, colorectal cancer symptoms are similar in men and women. Differences often come from perception and interpretation. Women may dismiss symptoms such as bloating, indigestion, or fatigue as stress related or hormonal. Changes in bowel habits, including constipation or diarrhea, may not immediately be associated with a tumor and can be overlooked.
Men are more often prompted to seek medical advice because of blood in the stool or unintentional weight loss. Medically, the core symptoms are broadly the same. What matters most is taking action when symptoms persist.
Colon Cancer Symptoms In Young People
Although colorectal cancer is more common in older adults, a concerning trend has been observed in recent years: people younger than 50 are also increasingly affected. In this group, diagnosis can be delayed because other causes are often suspected first.
Symptoms in younger people are often the same as in older adults: blood in the stool, pencil thin stools, persistent abdominal pain, and changes in bowel movements. Because colorectal cancer may not be the first consideration, warning signs can be ignored for too long. Even when symptoms have other explanations, a medical evaluation is important, especially with a family history.
Risk Factors For Colorectal Cancer
The Most Important Risk Factors At A Glance
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Cases Of Colorectal Cancer In First Relatives
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Chronic Inflammatory Bowel Diseases, Including Inflammatory Bowel Disease
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Obesity And Lack Of Exercise
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Alcohol And Or Tobacco Consumption
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Consumption Of Red Meat
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Diabetes Mellitus
If In Doubt, Have Symptoms Checked Out By A Doctor
Many symptoms listed here can have harmless causes. However, the risk of overlooking something is especially high with colorectal cancer, with potentially serious consequences. If you notice persistent changes in your digestive system, do not hesitate to see a doctor.
Symptoms such as blood in the stool, pencil thin stools, unexplained abdominal pain, constipation that does not improve, or persistent fatigue are particularly concerning. Colorectal cancer is curable if detected early.
If symptoms are hard to classify and persist, it is essential to consult your family doctor and arrange a GP appointment. Your doctor can review your normal bowel habit, perform an initial assessment, and plan further tests. This may include blood tests to check red blood cells and normal level markers, a rectal examination using a gloved finger, stool based screening, and referral for a colonoscopy using a flexible tube. These steps help clarify diagnosis and guide treatment decisions.
Taking Action Yourself Options Without Visiting A Doctor
