Sunday, July 19, 2015
A few winters ago, Rachel read the book "Farmer Boy" by Laura Ingalls Wilder to Henry and I in the evenings after dinner and chores. We chose to turn off all our lights and use only oil lamps while we sat down to read and listen, which was a nice complement to the book. Henry enjoyed listening to the stories (based on her husband Almanzo's experiences on an upstate New York farm in the 1800s), as did I. For me, they were also quite instructive!
Despite being interested in the content, I always found myself quite sleepy after the reading. I assumed at the time that this had something to do with the dim light of the oil lamps. As it turns out, I was right, but there's far more to this effect than I was aware of.
I've lately been reading the book Lights Out by TS Wiley, which explains this effect and its tremendous implications. A researcher focusing on diabetes, the author found herself constantly returning to the role played by light in triggering the various hormones that control our sleep, appetite, addictions, and sex drive.
Though it should come as no surprise, the artificial extension of daylight through our use of electric lights (and computers, televisions, smart phones, etc) is in large part the driving force behind the appetites that drive us to favor carbohydrates and sugars. Since these are no longer as difficult to come by as they were in the age our bodies are designed for, we eat far more than our bodies can use. The resulting chronic high blood sugar we experience is what makes most of us insulin resistant and prone to a wide variety of the diseases that have risen dramatically during the 20th century.
The book is largely a highlight of various studies performed by the CDC and NIH. They interview Dr. Thomas Wehr of the NIH, who suggests that on less than 9.5 hours of sleep (a conservative minimum before the age of electricity), people will most likely develop either diabetes, heart disease, cancer, infertility, mental illness, or premature aging. When the authors asked him if he felt this should be made public knowledge, his response was, "Well, yes, they do have a right to know. They should be told; but it won't change anything. Nobody will ever turn off the lights".
Considering that 35% of Americans are now obese, and 69% of us are overweight, most of us will suffer heart disease (our #1 cause of death), 50% of us will experience cancer, a third of us are expected to develop diabetes, and 13% are on anti-depressants, it might do us some good to learn a little more about this. Though the author's style is a little shrill, the subject matter appears to be quite sound and is a real eye opener.
Another related book which I found quite interesting is Clark Strand's "Waking up to the Dark", It focuses on sleep patterns, comparing historical (i.e. normal) patterns with today's electrically enhanced patterns, focusing on the implications for spirituality and mental health. Anyone with sleep issues will definitely be interested. James Howard Kunstler recently interviewed him in this podcast, which may pique your interest as it did my own.
Posted by David Veale