Ex-secretary of state George Shultz was besotted by Theranos fraudster Holmes, book says

He was either corrupt', in love' or had completely lost' his mental edge, says grandson who blew whistle on Holmes's scheme

Former US secretary of state George Shultz's support for Elizabeth Holmes and her fraudulent blood testing company, Theranos, which devastated his family and caused a bitter feud with his grandson, receives fresh scrutiny in a biography published on Tuesday.

Shultz was Ronald Reagan's top diplomat at the end of the cold war. Before that, he was secretary of the treasury and secretary of labor under Richard Nixon. He is now the subject of In the Nation's Service, written by Philip Taubman, a former New York Times reporter.