Hillary Clinton has had chronic problems with dehydration and dizziness for “many years”, her husband Bill admitted on Monday.
Mrs Clinton sparked concerns over her health after she appeared to collapse at a 9/11 memorial in New York before being hauled into a van by secret service staff.
Clinton staff claimed the White House hopeful had been “dehydrated”.
“And she had two-and-a-half hard days before the day when she got dizzy.
Former President Bill Clinton has admitted Hillary has suffered from dehydration for ‘years’
But he added his wife of 41 years is “doing fine”.
The 68-year-old, who has repeatedly denied she is battling serious health issues, but the former US Secretary of State contracted a stomach virus in December 2012.
A week later, she was diagnosed with a serious blood clot in her head, which caused a blockage in a vein that drains blood from the brain.
The clot – the second that Mrs Clinton has suffered – resulted in a stay in hospital and several days of treatment, forcing her to wear special glasses for several months afterwards.