Host Dr. Carsten Lekutat discusses when you should have a colonoscopy with Dr. Fritz von Weizsäcker. What are the risks involved? And what happens if you don't remove polyps?
Dogs can sniff out drugs, cash and explosives. Now media and researchers are celebrating a new canine skill: their ability to detect tumors. But we shouldn't get too excited about it yet.
The future isn't far off, according to US researchers: doctors will soon be able to detect cancer and locate tumor cells just by examining one blood sample. But is this new screening method as good as it sounds?
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