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Sunlight good. Blue light bad.

Rob Smith is a principal at Architects Smith Metzger.

Melatonin is the hormone which makes us sleepy. Sunlight reduces the production of melatonin and therefore we are not sleepy during the daytime. Diminishing daylight in the evening increases the production of melatonin and makes us sleepy. 

Blue light on the other hand does not have the same effect as sunlight. Blue light diminishes the production of melatonin.  Unfortunately, the drive to get more light for less watts has been attained on the back of blue light.

 

Our homes are bathed in blue light. Just go to buy light bulbs and the push is for compact fluorescent and LED, both which emit blue light. Then we have all the blue light emitting gadgets such as cell phones, tablets, computer screens, and TVs.  Just look at the blue glow as you drive through your neighborhood.

What’s a sustainable person to do?

  • Make sure to buy a full spectrum lamp which provides light closer to daylight.
  • Install Drift light in your house which over 37 minutes (the average length of sunsets) dims and helps the body with the shift from light to darkness for a better sleep.
  • Turn off the TV and tablet. Recommendations are a full 2 to 3 hours before you hit the pillow. I bet that does not happen often but many also sleep poorly.

Let’s take a test together.  No TV, phone, or tablet 2 hours before bed.  Let me know if you sleep better. May be better for your marriage too!  Contact me at rsmith@smithmetzger.com

Comments

Rob,

There's actually a free app that you can put on your computer, cell phone, tablet etc. that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.

Check it out. https://justgetflux.com

Drew

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