I’m skeptical about … screening colonoscopies.

Medical screening tests harm more people than they help. It’s true, and like the sinking of the Titanic: “It’s a mathematical certainty.” Remember first that the goal of medical screening is to detect or prevent potentially fatal diseases in an asymptomatic population. And the reason most people in the population are asymptomatic is because they don’t have the disease in the first place. You have to screen many to benefit a few. Continue reading