Studies also show that chronic stress reduces the levels of the hormone estrogen in women.

VOA: special.2009.03.24

Talking leads to the release of the brain hormone oxytocin, which lowers her stress levels.

VOA: special.2009.03.24

The pump developed by researchers is a double pump - in addition to insulin, it automatically secretes glucagon, a hormone that taps glucose reserves in the liver, raising blood sugar levels when they get too low, a condition called hypoglycemia.

VOA: standard.2010.04.15