I loved working night shift, and did so for many years. Oops, could be a cancer causer. Wow, couple that with my drinking alcohol to excess and smoking 2 packs of cigarettes a day for 30 years. Too late now. It's great for younger folk that we now have a wiring diagram of our biological clock.
The World Health Organization lists shift work as a potential carcinogen, says Erik Herzog, PhD, Professor of Biology in Arts & Sciences at Washington University in St. Louis.
And that’s just one example among many of the troubles we cause ourselves when we override the biological clocks in our brains and pay attention instead to the mechanical clocks on our wrists.
Researchers have reported the discovery of a crucial part of the biological clock in the brain: wiring that sets its accuracy to within a few minutes out of the 1440 minutes per day. This wiring uses the GABA (γ-amino-butyric acid) neurotransmitter to connect the individual cells of the biological clock in a fast network that changes strength with time of day.
Here's the full article: