Blood, Simpler. One woman’s drive to upend medical testing.

"She no longer devotes time to novels or friends, doesn't date, doesn't own a television and hasn't taken a vacation in ten years. Her refrigerator is all but empty, as she eats most of her meals at the office," New Yorker's Ken Auletta writes in a profile about Elizabeth Holmes. Holmes is the founder of Theranos, a blood diagnostics firm that now is valued at more than $9 billion.