A $700 blood test promises to detect 50 different kinds of cancer. The results come with major caveats.

Tech Insider : Business
two vials of blood
Grail's Galleri test uses two vials of blood to screen for over 50 different kinds of cancer.

Darya Komarova/Getty Images

Millionaire Bryan Johnson is making his anti-aging 'basics' available for $333 a month to 2,500 people

Tech Insider
Bryan Johnson.
Bryan Johnson.

Magdalena Wosinska

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