December 14, 2025
Why Screening Matters: Understanding the Role of Colonoscopy


A Specialist Explains Colonoscopy: Proven Insights for Colorectal Screening

By Dr. Ritha Belizaire


Quick Insights

A colonoscopy is a visual exam of your colon using a thin, flexible camera to detect any abnormal growths or changes. This simple yet powerful procedure is the leading test for preventing colorectal cancer by finding polyps early, improving survival rates, and is strongly supported by leading medical research and clinical guidelines from high-authority institutions. Learn more about colorectal cancer screening.


Key Takeaways

  • Colonoscopy is highly effective, lowering colorectal cancer risk by up to 40% over a decade.
  • Major guidelines advise starting colorectal screening at age 45, even without symptoms.
  • Removing polyps during colonoscopy can directly prevent colorectal cancer from developing later.
  • Overcoming embarrassment or fear leads to higher long-term survival and peace of mind.


Why It Matters

Colonoscopy empowers you to stay in control of your health, turning a moment of anxiety into years of confidence and well-being. This screening removes the fear of the unknown, allowing you to take proactive steps against colorectal cancer and protect your quality of life for yourself and those who rely on you.


Introduction

As a dual board-certified colorectal surgeon, I know that colonoscopy isn't just a medical procedure—it's a powerful tool for protecting your long-term health.


A colonoscopy is a visual exam of your colon using a thin, flexible camera to detect and remove abnormal growths called polyps before they become cancerous. For many patients in Houston, understanding what a colonoscopy is and why it matters can be the difference between catching colorectal cancer early or missing a critical window for prevention.


Early intervention means not only better survival rates, but also less invasive treatments and more years spent enjoying life with your loved ones.


After guiding countless patients through colorectal screening in Houston, I've seen how addressing fears and providing comfort-focused care transforms the experience. Research shows that screening colonoscopy can reduce colorectal cancer mortality by up to 40% over a decade, making it the gold standard for prevention.


If you're anxious or unsure about colorectal screening, you're not alone—and you're in the right place to get clear, compassionate answers.


Why Screening Matters: Understanding the Role of Colonoscopy

Colorectal cancer is a major health concern, both in Houston and worldwide. Over 1.9 million new cases were diagnosed globally in 2020, with projections estimating an increase to 3.2 million cases by 2040.


This makes colorectal cancer not only common but also a leading cause of cancer-related deaths. In my practice, I often encounter patients whose lives have been directly impacted by these statistics—often because preventive screenings were delayed or entirely foregone due to fear or misinformation.


Colorectal Cancer in Houston: Fast Facts

  • Colorectal cancer is the second most common cause of cancer death in the United States.
  • Many cases are preventable with early detection and removal of polyps.
  • Houston's diverse population brings varying risk factors and access to care, yet the universal need for screening remains constant across all demographics.


How Colonoscopy Prevents Cancer

Colonoscopy stands out as a unique preventive measure because it allows for the detection and removal of polyps during the same procedure. Polyps are small growths that can eventually develop into cancer if left unchecked.


From my perspective as a board-certified colorectal surgeon, the dual ability to detect and excise polyps makes colonoscopy the gold standard in colorectal cancer prevention. It is supported by data that suggests a 40% reduction in mortality rates over a decade when compared to other methods, such as FIT testing.


The early removal of polyps can make the crucial difference between a straightforward outpatient procedure and the complex journey of cancer treatment—something I strive to emphasize to my patients.


I have observed that patients who grasp the underlying reasons for screening are more inclined to follow through. This makes education and dialogue pivotal components of my clinical practice.


The earlier we intervene by removing polyps, the brighter the prospect for maintaining a healthy, cancer-free life becomes.


Who Should Get Screened—and When?

Knowing when to begin screening is critical. Current national guidelines advocate for the onset of colorectal cancer screening at age 45, even in the absence of symptoms or a family history of the disease.


This update stems from emerging research that indicates precancerous polyps and cancers occur at comparable rates in individuals aged 45 to 49 as those aged 50 to 54.


Updated Screening Guidelines

  • Begin screening at age 45 for individuals at average risk.
  • Keep screening regularly until at least age 75.
  • For those with familial history or certain health conditions, earlier and possibly more frequent screenings may be recommended.


I make a concerted effort to customize screening plans based on each patient's distinctive risk factors. This tailored approach is notably crucial for individuals with a family history of colorectal cancer or conditions such as inflammatory bowel disease, as regular screenings substantially reduce the risks associated with high-risk colorectal cancer.


Risk Factors to Know

  • Family history of colorectal cancer or polyps
  • Personal history of inflammatory bowel disease
  • Certain genetic syndromes
  • Lifestyle factors (diet, smoking, inactivity)


Discussing these risk factors candidly not only empowers patients to make informed decisions but also helps mitigate the stress and apprehension commonly associated with the screening process.


I advocate for open communication with a trusted physician to determine your individual risk and optimal screening strategy.


When to Seek Medical Attention

If you experience rectal bleeding, unexplained weight loss, or persistent changes in bowel habits, it's imperative to consult a physician promptly. These symptoms warrant a timely evaluation to determine the necessity for further diagnostic procedures.


What to Expect: Before, During, and After Your Colonoscopy

Understanding the procedural expectations surrounding colonoscopy is instrumental in alleviating the anxiety that often accompanies it. I ensure to meticulously walk my patients through each phase of the process to prevent unnecessary surprises.


Preparing for Your Test

Proper preparation is essential for a successful colonoscopy. The day before the test, patients will follow a clear liquid diet and take a prescribed bowel preparation solution to cleanse the colon thoroughly.


I provide a detailed checklist and am always available to address any questions to simplify the preparation process.


  • Follow a diet consisting solely of clear liquids, such as broth, clear juices, and water, on the day preceding the exam.
  • Follow the bowel preparation instructions precisely, usually administered in split doses.
  • Arrange for someone to provide transportation home after the procedure.


The Day of the Procedure

Upon arriving on the day of your colonoscopy, you will check in, change into a gown, and meet with me for a review of the planned procedure. Most patients are administered light sedation to enhance comfort, often resulting in little to no recollection of the procedure itself.


The scope is inserted gently through your colon, and any polyps discovered are removed immediately.


In my practice, taking a gentle, patient-focused approach greatly influences patients' comfort levels. For those seeking additional reassurance, I offer in-office nitrous oxide to ensure a relaxing experience without the lingering effects of traditional sedation.



Generally, the procedure is swift, often concluding in under 30 minutes.


Recovery and Follow-Up Care

Following your colonoscopy, you'll rest in a recovery area until the effects of sedation wear off. Most patients feel entirely back to normal within hours.


I personally review the results with each patient before their departure, providing clear instructions for any necessary follow-up. If polyps were removed, I would explain the implications for future screening schedules and ensure that you are suitably informed and confident about the next steps.


In my effort to deliver clear communication and prompt follow-up, my aim is to alleviate any uncertainties surrounding your results or the actions to be taken.


Voices from Our Houston Community

Patient experiences are at the heart of my approach to colonoscopy and colorectal screening. Hearing directly from those I've cared for helps me continually refine the comfort and support I provide.

I recently received feedback that captures what we aim to provide for every individual:

"Dr. B and her staff were very professional and comforting. It was a great experience and highly recommend her." — Mark

You can read more Google reviews here to see additional perspectives.


Knowing that individuals feel both cared for and reassured is the foundation of my practice, and it's why I am so passionate about making colonoscopy a positive, empowering experience for everyone.


Colonoscopy and Colorectal Screening in Houston

Colonoscopy plays a vital role in protecting the health of our Houston community. With the city's diverse population and unique healthcare needs, it's important to have access to expert colorectal screening in Houston.


At Houston Community Surgical, I focus on providing specialized colorectal care and personalized screening plans that reflect the realities of life in our city. Whether you're in Houston Heights or Midtown, I am committed to ensuring every patient receives the attention and guidance they deserve.


Local factors such as varying family histories, dietary habits, and access to care can influence when and how often screening is needed.


If you are dealing with bowel control issues or fecal incontinence, I am pleased to offer Axonics sacral neuromodulation, an advanced treatment for fecal incontinence, as part of my practice's innovative approach.


As a board-certified colorectal surgeon serving patients throughout Houston, I strive to make high-quality colonoscopy accessible and comfortable for all. If you're considering colorectal screening, I invite you to reach out with your questions or to schedule a consultation.


Taking this step can make a lasting difference for your health and peace of mind—right here in the community we share.


Conclusion

Colonoscopy is the single most effective tool for preventing colorectal cancer and protecting your long-term health. In summary, early detection and removal of polyps can lower your risk of cancer and dramatically improve survival rates, as shown by recent research.


For Houston-area residents, timely screening means fewer missed moments and more years spent with loved ones.


As a board-certified general and colorectal surgeon, I am dedicated to making this process as comfortable and stigma-free as possible—including offering office-based procedures with options to alleviate anxiety for those who feel anxious.


If you're ready to stop letting fear or embarrassment hold you back, call me at 832-979-5670 for a same-day or next-day appointment. Not in Houston? You can request a virtual second opinion at www.2ndscope.com.


To take the next step, schedule a same-day consultation and start your journey toward peace of mind.


Taking this step now can help you regain confidence, comfort, and peace of mind—while ensuring you receive expert, compassionate care from a specialist who truly understands your needs. For more on survival rates and the impact of screening, see the latest NIH research on colorectal cancer outcomes.


This article is for educational purposes only and should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition or treatment options. Never disregard professional medical advice or delay in seeking it because of something you have read in this article.


If you'd like more expert tips and research updates, subscribe to my colorectal health newsletter.


Frequently Asked Questions

What is a colonoscopy, and why is it important?

A colonoscopy is a visual exam of your colon using a flexible camera to detect and remove polyps before they become cancerous. This procedure is proven to lower colorectal cancer risk and improve survival rates, especially when started at age 45.


Early screening helps you avoid more invasive treatments and supports a longer, healthier life.


Where can I get colorectal screening in Houston?

You can schedule a colonoscopy or colorectal screening in Houston with me at Houston Community Surgical. I offer same-day and next-day appointments, as well as office-based procedures under nitrous oxide for comfort.


My practice is dedicated to providing personalized, compassionate care for Houston's diverse community, making screening accessible and stress-free.


As an insurance specialist, what documentation is provided for colonoscopy procedures?

I provide thorough, clear documentation for every colonoscopy, including detailed procedure notes, pathology reports, and follow-up recommendations. This ensures insurance specialists have all the necessary information for claims processing and compliance, streamlining approvals and supporting patient care continuity.


My approach prioritizes accuracy and timely communication for all parties involved.

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