Unlike your average daytime bulb, the best light bulbs for reading at night are designed to reduce eye strain and impact on your body's natural circadian rhythm by limiting the output of blue light which can potentially disrupt sleep. (In other words, according to a study in Environmental Health Perspectives, certain wavelengths actually trick your brain into thinking it is daytime, which may make it harder for you to sleep right after exposure.) Like any other bulb, you'll want to make sure the fit, wattage, and brightness are compatible with your light fixtures and preferences — but for nighttime reading specifically, you'll also want to look for a lower color temperature.
With household lighting, color temperature is typically measured in kelvins. A higher number of kelvins (K) — about 6,500K or above — mimics clear, bright sunlight. The other end of the spectrum, at about 2,000K or less, is equivalent to the soft, soothing glow you'd get from a candle and has a lot less blue light than you'd get with a cooler light. As a result, when shopping for reading bulbs, you'll want a bulb on the lower end of the Kelvin scale to minimize eye strain and potential sleep impacts.
Scroll on for four light bulb options that all offer a warm glow but enough brightness (measured in lumens) to read with so you can fall asleep easily when you're ready. Think of it as step one in improving your sleep routine.
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