By the time cancer is discovered, it’s often too late to change its course. Close to half of cancers will already have spread, making death — whether within months, five years, or 10 years — a near certainty.
Mammograms, colonoscopies, and other cancer screenings may have caught some. But medicine doesn’t screen for many cancers — though in the future, it’s likely we will be able to with a simple blood draw.
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