We can’t find any reports stating that someone died due to crying.
You can't cry yourself to death. Sources suggest that when we cry we get rid of nasty chemicals very quickly and this make us feel better. Our brain tells us when it’s time to stop although our emotions can keep things going longer than physically necessary.
The nose is running because the tears actually go into the nasal passages. Those headaches that can creep in after a sob session aren’t quite as easy to explain. Experts speculate that it might have something to do with dehydration from the water lost in tears. Or it could be because muscles tend to tighten up when we’re upset.
Tears are necessary to keep the eyeball moist, and contain proteins and other substances which maintain the eye healthy and to combat infection. Here are 13 things you probably don’t know about tears shared by Huffingtonpost.com.