Avoid stool testing for blood in patients with iron deficiency anemia or gastrointestinal symptoms who have observed fresh blood in their stool Avoid colonoscopy for patients with constipation under 40 years old without alarm symptoms or a family history of colorectal cancer Avoid monitoring Barrett's esophagus more frequently than recommended in national guidelines Avoid repeating colonoscopies more frequently than recommended in national guidelines Avoid gastroscopy for dyspepsia in patients under 45 years without alarm symptoms