Colorectal cancer is the third most commonly diagnosed cancer in the United States, excluding skin cancers. It also remains one of the deadliest forms of cancer, primarily because it's often detected too late.

According to the American Cancer Society:

"Colorectal cancer is the third leading cause of cancer-related deaths in the United States when men and women are considered separately, and the second leading cause when both sexes are combined."

These alarming statistics are largely due to the silent and subtle onset of the disease. Many people don’t experience noticeable symptoms until the cancer has reached an advanced stage, making treatment far more difficult and survival rates lower.

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Top Overlooked Symptoms of Colorectal Cancer

1. Abdominal Cramps

Cramps are one of the most overlooked early symptoms. While occasional stomach discomfort is common and often linked to benign issues like gas, indigestion, or mild food intolerance, chronic, persistent, or unexplained cramping may be a warning sign of something more serious.

If these cramps are intense, long-lasting, or paired with other symptoms (such as fatigue or blood in stool), you should speak with your doctor immediately. Early intervention can make a significant difference in outcomes.

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2. Persistent Fatigue

Fatigue is a vague and often non-specific symptom, but it's important to pay attention to unusual levels of tiredness that don’t improve with rest. Many factors can cause fatigue, such as poor sleep, stress, poor diet, or even overexertion.

However, in the case of colorectal cancer, fatigue can stem from internal bleeding or the cancer cells consuming your body's energy. If you're consistently feeling drained despite adequate sleep, nutrition, and a healthy lifestyle, it's worth getting checked out.

Additionally, colorectal cancer may contribute to iron-deficiency anemia, leading to a further drop in energy levels due to a lack of oxygen-carrying red blood cells.

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3. Unexplained Weight Loss

Sudden and unintentional weight loss is one of the more noticeable signs of potential cancer. The Mayo Clinic defines this as losing 5% or more of your body weight within six months without any significant lifestyle changes.

For example, if someone weighing 150 pounds loses over 7 pounds without modifying their diet, exercise, or sleep routine, this qualifies as unexplained weight loss and warrants medical evaluation.

Cancerous cells consume a disproportionate amount of energy, and your immune system also uses more resources to combat the disease — both factors contribute to weight loss.

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4. Changes in Bowel Habits

Your stool can reveal a lot about your internal health. One of the key signs of colorectal cancer is sudden changes in bowel movements, including:

• Persistent constipation or diarrhea

• Narrow or ribbon-like stools

• Increased frequency or urgency

• Feeling that your bowel doesn’t empty completely

These changes may be the result of tumors obstructing or altering the structure of the bowel. Dark or tarry stools can also indicate internal bleeding higher up in the digestive tract.

If you notice consistent and unexplained changes in your bathroom habits, don't ignore them — bring it up with your healthcare provider.

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5. Blood in Stool

This is perhaps the most urgent warning sign that should never be dismissed. Blood in your stool may appear bright red, indicating bleeding in the rectum or anus, or dark and tarry, suggesting bleeding further up the digestive tract.

Although there are other potential causes, such as hemorrhoids or ulcers, only a doctor can determine the true source. Never assume it's minor — early detection can be life-saving.

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How to Reduce Your Risk of Colorectal Cancer

If you have a family history of colorectal cancer, or if you suffer from conditions like Crohn’s disease or ulcerative colitis, it’s especially important to take proactive steps. Here are several evidence-backed strategies to reduce your risk:

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✅ Eat a High-Fiber Diet

Include plenty of fruits, vegetables, legumes, and whole grains in your meals. These fiber-rich foods promote regular bowel movements, reduce inflammation, and help your body eliminate waste more efficiently — all of which lower your risk of cancer.

Some studies also suggest that certain phytochemicals found in plants may have protective, anti-cancer properties.

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✅ Exercise Regularly

Physical activity helps maintain a healthy weight, reduces inflammation, and supports overall digestive health. Aim for at least 150 minutes of moderate-intensity exercise per week.

Even walking, biking, or light yoga can make a big difference over time.

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✅ Avoid Smoking

Smoking increases your risk of many types of cancer, including colorectal cancer. If you smoke, consider seeking support to quit — your entire body will benefit.

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✅ Maintain a Healthy Weight

Obesity is a major risk factor for colorectal cancer. Excess fat, particularly around the abdomen, can lead to chronic inflammation and hormone imbalances, both of which increase cancer risk.

Small, consistent lifestyle changes in diet and activity can have a big long-term impact.

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✅ Limit Alcohol Intake

Drinking alcohol in excess is a well-established risk factor. Try to limit your intake to moderate levels, or cut it out entirely if you're at high risk.

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Final Thoughts

Colorectal cancer is deadly — but it’s also largely preventable and highly treatable when caught early. Pay attention to your body, don’t ignore changes, and get regular screenings (like colonoscopies) especially if you’re over 45 or have risk factors.

Your health is worth the effort. Stay informed, stay proactive, and encourage those around you to do the same.