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Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Serum Laboratory Studies, Stool Test, Breath Test01:30

Serum Laboratory Studies, Stool Test, Breath Test

Gastrointestinal (GI) diagnostic studies are pivotal in confirming, ruling out, diagnosing, or staging various diseases, including cancers. Following diagnosis, allocating time for discussions with the patient and providing informational resources is crucial. Diagnostic assessments of the GI tract often occur in outpatient settings like endoscopy suites or GI labs. Preparation for these tests may include dietary restrictions, fasting, liquid bowel preparations, laxatives, enemas, and the...

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Related Experiment Video

Updated: May 11, 2026

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection
07:35

Evaluation of Colorectal Cancer Risk and Prevalence by Stool DNA Integrity Detection

Published on: June 8, 2020

Screening for Colorectal Cancer: US Preventive Services Task Force Recommendation Statement.

, Kirsten Bibbins-Domingo1, David C Grossman2

  • 1University of California, San Francisco.

JAMA
|June 16, 2016
PubMed
Summary

Regular colorectal cancer screening for adults aged 50-75 offers substantial benefits. Multiple screening methods exist, but no single strategy is proven superior for reducing cancer incidence and mortality.

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Area of Science:

  • Oncology
  • Preventive Medicine
  • Public Health

Background:

  • Colorectal cancer is a leading cause of cancer death in the US, with most diagnoses in adults aged 65-74.
  • An estimated 134,000 new cases and 49,000 deaths were projected for 2016.
  • Colorectal cancer screening is an underutilized preventive health strategy.

Purpose of the Study:

  • To update the 2008 US Preventive Services Task Force (USPSTF) recommendation on colorectal cancer screening.
  • To review the evidence on various screening methods for effectiveness, harms, and test performance.

Main Methods:

  • Systematic review of evidence on screening tests including colonoscopy, sigmoidoscopy, CT colonography, and various stool tests.
  • Evaluation of harms associated with screening tests.
  • Commissioned comparative modeling study for optimal screening ages and intervals.

Main Results:

  • Screening for colorectal cancer in average-risk, asymptomatic adults aged 50-75 years provides substantial net benefit.
  • Multiple screening strategies are available, each with varying evidence, advantages, and limitations.
  • No empirical data shows one strategy offers a greater net benefit than others.

Conclusions:

  • The USPSTF recommends colorectal cancer screening for adults aged 50-75 years (A recommendation).
  • For adults aged 76-85, screening decisions should be individualized based on overall health and prior screening history (C recommendation).