Wojcicki, 23andMe’s CEO, also happens to be Silicon Valley royalty: she married Google cofounder Sergey Brin; her father chaired the Stanford physics department; and her mother is a journalism teacher at Palo Alto High who rented out the family’s garage to graduate students Brin and Larry Page to incubate Google. It was through a 23andMe test that Brin learned he had a genetic mutation that increased his risk of getting Parkinson’s to somewhere between 30 and 75 percent, compared to the broader population’s risk of 1 percent. Since then, he drinks green tea and exercises a lot, two activities
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