Will Hillary Clinton's health affect her presidency bid?

Hillary Clinton's health issues is drastically worse than it has been revealed and it is feared that it would damage her bid for the White House in 2016, it has been revealed.

A new book has revealed that the 66-year-old former US secretary of state has suffered more fainting spells than publicly known, is prone to have blood clots, and may be at serious risk of a stroke, News.com.au reported.

The book 'Blood Feud: The Clintons vs. the Obamas' written by Edward Klein says that she has been warned by doctors to be carefully monitored for the rest of her life before his wife was released from the hospital.

The book claims that Clinton was taken to New York-Presbyterian Hospital after a fainting spell and concussion that she suffered in her seventh-floor office at the State Department, not at her home.

A cardiac specialist with knowledge of Clinton's condition says in the book that the unique thing about clotting in the brain is that it could have transformed into a stroke.