A New York Times article describes how seemingly every body part has a cancer advocate and how early detection in the US leads to similar cancer survival rates as other countries that don't actively encourage early detection.
The article goes on to describe how widespread early detection can be harmful to many people:
"But in fact, except for a few types of cancer, routine screening has not been proven to reduce the death toll from cancer for people without specific symptoms or risk factors — like a breast lump or a family history of cancer — and could even lead to harm, many experts on health say."
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