what are the medical consequences of sleep deprivation? How long can the body go without sleep?

Answer 1

"...total sleep deprivation is fatal in 16 to 20 days without exception..."

Partial sleep deprivation can be caused by a very common condition called sleep apnea. One of the symptoms is heavy snoring.

Answer 2

You can go into sleep deprivation psychosis in a couple of days.

Lack of enough sleep especially if you go to sleep past 10 pm raises cortisol, a stress hormone. Long term stress messes up you body in a multitude of ways.

Just go to bed.