Private clinics encourage healthy people to undergo medical screening. Alan Cassels says there's a cost to the patient and the healthcare system.

Medical screening tests can save your life, but they can also expose you to high levels of radiation and increase your risk of false positives. Alan Cassels is a health policy analyst. He says that private clinics encourage healthy people to get whole body scans because there's money in it, not because it's responsible preventive medicine.

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