[rbobby]

> Can it really prevent cancer?

No.

What this is, is a test to detect cancer. The cool thing is that it should detect various cancers early (even before symptoms are showing).

The earlier cancer is detected the sooner a patient can start treatment. And the earlier treatment starts the better the odds of surviving.

And as a blood test this could end up being a standard part of an annual checkup. Especially for patients at greater risk (eg. men over N years, smokers, etc).