Clinton’s reluctance to drink water causing tension with her staff: report
© Greg Nash

Though Hillary ClintonHillary Diane Rodham ClintonPelosi on power in DC: 'You have to seize it' Cuba readies for life without Castro Chelsea Clinton: Pics of Trump getting vaccinated would help him 'claim credit' MORE was diagnosed with pneumonia on Friday, the real concern is chronic dehydration, sources close to the Democratic nominee told Politico

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“She won’t drink water, and you try telling Hillary Clinton to drink water,” a source said. 

Clinton abruptly left a 9/11 memorial service in New York on Sunday because she felt “overheated.” 

Video of Clinton leaving the event showed the former secretary of State struggling to walk to her van. At one point she appeared to collapse. 

Sources told Politico that Clinton quickly recovered in the backseat of the air-conditioned van as she drank water and Gatorade. 

Clinton, whose health has been under scrutiny, quickly called campaign staff and family to tell them what happened and assess the political fallout.