You’ve probably heard of the dangers of blue light. Usually, this is in the context of phones and computers and other screens. But did you know that blue light can actually increase oxidative stress in insects? This results in death for the critters. What’s even more interesting is that different wavelengths of light will affect the insects at different stages in their life.

blue light
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Those Poor Fruit Flies

Scientists took some Drosophila, you know them as fruit flies, and exposed their eggs, larvae, pupae, and adult flights to various wavelengths of blue light. Here’s what they found:

  • For eggs, the most lethal wavelength was 405nm.
  • For larvae,  it was 405-466nm.
  • For pupae, it was 417-466nm.The adults were most resistant, so the scientists had to beam them for a few days.
  • At 466nm, 94% of females died on day 6.
  • 417, 439, and 466nm killed off 92%, 90%, and 100% of the males respectively on day 3.
  • And on day 6, all wavelengths killed all males.

Blue Light Experiment Takeaway

So, what’s the takeaway from all these studies? Well, you’re not a drosophila egg or larvae… but blue light does affect humans too. Personally, I keep night mode on my computer and phone at all times because I’m working (too much). However, if yellow screens aren’t your cup of tea, swap a book for a screen from time to time to save your inner drosophila.