Although it was hard to get medical care and attention into the site - until the army intervened - those who were in there were doing their best to see patients and record what happened. The statistics they collected were a little alarming - there were 5,162 recorded medical incidents, which means that over 5% of the entire population suffered an incident requiring medical attention at some point over the three days.
A significant number of these incidents were to attend people who'd had drug issues, including abuse and overdose, and that shouldn't come as a shock to anybody. Sadly, there were also three deaths at the festival. Two people died from overdoses, which is sad but unsurprising, but one festival goer slept in a muddy sleeping bag in a field of debris. A tractor that was trying to tidy up the mess didn't see him and ran over him, resulting in his death. That's no way to go.