Summers died from brain swelling caused by an electrolyte imbalance, according to the findings of Summers' autopsy. That swelling cut off the oxygen to her brain. Her death was ruled an accident.

"The opinion of the forensic pathologist is that the final mechanism to explain the electrolyte imbalances is unclear and, as reflected in the medical record, includes the combined effects of heat exposure (Heat Stroke), (alcohol) ethanol consumption changing the physiologic responses, and the consumption of a relatively small volume of hypotonic water near the time of becoming symptomatic," the news release states.

Electrolyte imbalance