Colorectal Cancer: Early Signs in Bathroom Habits and Risk Factors
Colorectal cancer cases are rising in Brazil, becoming the most frequent type of cancer for both men and women, and causing over 23,000 deaths annually according to the National Cancer Institute (Inca). This disease is strongly linked to lifestyle and often presents early signs that are frequently ignored, complicating treatment. Key warning signs include blood in stool, rectal bleeding, persistent diarrhea or constipation, thin stools for days, unexplained weight loss, chronic abdominal pain or cramps, and anemia without a clear cause. Singer Preta Gil's experience highlighted these symptoms, including prolonged constipation, flattened stools with blood and mucus, and severe bleeding leading to a rapid diagnosis of a six-centimeter tumor.
Diagnosing colorectal cancer remains a challenge, as many individuals delay seeking medical help even when recognizing symptoms. A survey by A.C. Camargo revealed that while 9% of respondents reported seeing blood in their stool, nearly half did not seek medical attention. Globally, nearly 2 million people are diagnosed with colorectal cancer each year, making it the third most common cancer. In Brazil, it accounts for 10% of new cancer cases and its incidence is increasing. Alarmingly, while most diagnoses occur in individuals over 50, there's a notable rise in younger populations, potentially linked to unhealthy lifestyles.
Reducing the risk involves adopting specific habits: maintaining a balanced diet, managing weight to avoid obesity, engaging in regular physical activity (40-60 minutes of walking daily), avoiding smoking and excessive alcohol, ensuring adequate hydration (around 3 liters daily in Brazil), and maintaining regular bowel movements (within 48 hours). Crucially, seeking medical advice promptly at the first sign of symptoms is essential. Brazil's public health system (SUS) has introduced a new national screening protocol using the Fecal Immunochemical Test (FIT) for asymptomatic individuals aged 50-75. FIT is a stool test that accurately detects microscopic human blood, indicating potential polyps or tumors.
The rising incidence of colorectal cancer, particularly among younger demographics, signals a critical public health challenge rooted in lifestyle factors. While early detection through symptom recognition and screening tests like FIT is crucial, societal barriers, including the underreporting of symptoms and delayed medical consultation, significantly hinder effective intervention. The increasing prevalence in younger individuals, despite historical trends, warrants further investigation into environmental and behavioral influences beyond genetics. Public health strategies should focus not only on promoting healthy habits but also on destigmatizing symptom reporting and ensuring accessible, timely diagnostic pathways, especially for at-risk younger populations. Understanding the interplay between lifestyle, environmental factors, and the increasing incidence of this disease will be key to developing more effective prevention and treatment paradigms over the next decade.
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