31 Strange Causes of Headaches That Have Nothing to Do With Dehydration

Lisette Marie

19. Blue Light Exposure: More Than Just Eye Strain

Female looking at her phone in bed. Photo Credit: Envato @nancyl21

Staring at a screen all day does more than tire your eyes—it can mess with your brain’s circadian rhythm. Blue light from phones, tablets, and computers suppresses melatonin, leading to poor sleep, increased eye strain, and headaches. If you’re prone to screen-induced headaches, try using blue light blocking glasses, activating night mode on devices, and taking regular breaks using the 20-20-20 rule (every 20 minutes, look 20 feet away for 20 seconds).

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19. Blue Light Exposure: More Than Just Eye Strain

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