Circadian Rhythm

Insomnia: A combo of genetics and environment?

Everyone at some point knows the pain of a sleepless night. For some, though, this is an all too frequent occurrence. A few quick facts:

  • 10% of adults (and 22% of the elderly) have insomnia disorder[ref]
  • Heritability estimates from twin studies show that insomnia is around 50% genetic; genes lending susceptibility along with environmental factors. [ref] Another study broke this down further, finding that most genetic influence is on the type of insomnia where people have a hard time staying asleep, rather than difficulty falling asleep. [ref]
  • 80-90% of people with major depression experience insomnia of some sort, with about half of them experiencing severe insomnia. [ref]
  • Insomnia can be either a problem with initially falling asleep or with waking up in the early morning hours and not being able to fall back to sleep.
Is there an "Insomnia Gene"? well, no... (more…)

By Debbie Moon, ago
Circadian Rhythm

How light at night could double your risk of cancer.

The World Health Organization listed ‘light at night’ as a possible carcinogen in 2007. That is an eye-opening statement for something that affects almost all of us. From streetlights to the lamp in the living room, from accent garden lighting to the glow of TV's and cell phone... artificial light at night is truly ubiquitous. An often stated fact is that 80% of people in North America cannot see the milky way at night.  What was more surprising to me was that the Milky Way was supposed to be visible!  Who knew?  Oh, wait – people with no light pollution know… So how can light possibly be a carcinogen? Will turning on the TV or a light in the living room after dinner suddenly cause cancer?  Let me start with two recent, contradictory studies, and then I'll get into the science of why I think that artificial light at night is a fundamental health problem.  (more…)

By Debbie Moon, ago


Copyright © 2018 Moon Consulting   Privacy Policy   About