{"id":9448,"date":"2018-10-31T17:09:20","date_gmt":"2018-10-31T17:09:20","guid":{"rendered":"https:\/\/www.humnutrition.com\/blog\/?p=9448"},"modified":"2019-04-10T22:55:10","modified_gmt":"2019-04-10T22:55:10","slug":"blue-light","status":"publish","type":"post","link":"https:\/\/www.humnutrition.com\/blog\/blue-light\/","title":{"rendered":"Why Blue Light Disrupts Your Sleep Patterns"},"content":{"rendered":"Just in time for Daylight Savings.\r\n<!--more-->\r\n\r\nPerhaps like me, you only have the vaguest memories of holding a prism in a science class and learning about how we see color. Well, it turns out some of that information can explain why staring at screens is disrupting our natural hormone cycle.\r\n\r\n<img decoding=\"async\" class=\"wp-image-9477 aligncenter\" src=\"https:\/\/res.cloudinary.com\/hum-nutrition-inc\/image\/upload\/q_100\/v1540938243\/Color_Spectrum_HUM_Blog.jpg\" width=\"600\" height=\"300\" \/>\r\n<h2>Basics of Blue Light<\/h2>\r\nFirst, a little refresher on how light works. If you&#8217;ll recall from your prism lecture, visible light is actually made of spectrum of different-colored rays. When we isolate the individual color rays, we find that those on the red end of the spectrum have longer wavelengths. Conversely, those on the blue end of the spectrum have shorter wavelengths. Specifically, blue light has wavelengths ranging from 380-500 nanometers.\r\n\r\nWhy are these facts important? The shorter wavelengths are more energetic and penetrate deeper into the eye than other wavelengths of light.\r\n<h3><img decoding=\"async\" class=\"wp-image-9483 aligncenter\" style=\"font-size: 17px; font-weight: 400;\" src=\"https:\/\/res.cloudinary.com\/hum-nutrition-inc\/image\/upload\/q_100\/v1541002824\/Blue_Light_Body_HUM_Blog.jpg\" width=\"600\" height=\"378\" \/><\/h3>\r\n<h2>Sources of Blue Light<\/h2>\r\nIt&#8217;s not that all blue light is always terrible. After all, sunlight is the original source of blue light! But it&#8217;s important to understand that we&#8217;re getting more exposure from less wholesome sources. More importantly, we&#8217;re getting it at unnatural times of the day. Your computer, phone, and television are all culprits, as is LED lighting. And with the allure of streaming websites and <a href=\"https:\/\/www.humnutrition.com\/blog\/healthy-social-media-habits\/\">social media<\/a>, most of us are ingesting blue light very late into the evening instead of from sunrise to sunset.\r\n<h2>How It Affects us<\/h2>\r\nThe main thing to know is that blue light disrupts your pineal gland. The pineal gland is an important part of your endocrine system that&#8217;s responsible for making melatonin. You&#8217;re probably familiar with melatonin as the <a href=\"https:\/\/www.humnutrition.com\/blog\/mighty-night\/\">sleep<\/a> hormone. It&#8217;s in charge of modulating our natural sleep cycles. Because our brain associates blue light as sunlight, exposure to it suppresses the production of melatonin.\r\n\r\nOn one hand, studies find that blue light can actually\u00a0<a href=\"https:\/\/brighamhealthhub.org\/healthy-living\/blue-light-boosts-daytime-performance\" target=\"_blank\" rel=\"noopener noreferrer\">boost our alertness and attention<\/a>. Consequently, lighting specialists began recommending using LED lights in classrooms for students with early start times.\r\n\r\nSo why the panic? The adverse effect of all this alertness is disrupted sleep cycles. While any type of light at night will contribute to keeping you awake longer, it&#8217;s especially bad with blue light. In a <a href=\"https:\/\/www.health.harvard.edu\/staying-healthy\/blue-light-has-a-dark-side\" target=\"_blank\" rel=\"noopener noreferrer\">Harvard study<\/a> that compared blue-light exposure to green-light exposure at night, blue light suppressed melatonin for three hours instead of the hour and a half of green light.\r\n\r\nThen, the deeper penetration of blue-light wavelengths can impact the tissues and structures of the eye. The <a href=\"https:\/\/www.reviewofoptometry.com\/article\/seeing-blue-the-impact-of-excessive-blue-light-exposure\" target=\"_blank\" rel=\"noopener noreferrer\">Review of Optometry<\/a> reports that too much exposure can even increase your risk of macular degeneration, aka vision loss, in the retina.\r\n\r\n<img decoding=\"async\" class=\"wp-image-9485 aligncenter\" src=\"https:\/\/res.cloudinary.com\/hum-nutrition-inc\/image\/upload\/q_100\/v1541003349\/Blue_Light_GIF_HUM_Blog.gif\" width=\"471\" height=\"265\" \/>\r\n<p style=\"text-align: center;\"><em>via <a href=\"https:\/\/giphy.com\/gifs\/snl-obamacare-iVDo6InQKyW8o\" target=\"_blank\" rel=\"noopener noreferrer\">giphy<\/a><\/em><\/p>\r\n\r\n<h2>What to Do About It<\/h2>\r\nLuckily, even electronic manufacturers are aware of the problem and offer features to combat the problem. Look for night-mode settings on your phone, computer, and even some websites. These settings will alter your screen to show a warmer orange light as opposed to the harsh bright blue light that simulates daylight and disrupts your melatonin production.\r\n\r\nWhile these settings are most crucial to use when the sun goes down, you might experiment with setting it to night mode full-time to see if your sleep quality improves even more.\r\n\r\nOr if you <em>reallllly<\/em> want to go overboard, you can adjust the color filters on your phone to remove blue light completely as I&#8217;ve done here. Stay tuned for reports back on whether this spooky-looking lighting improves my sleep quality.\r\n\r\n<img decoding=\"async\" class=\"wp-image-9493 aligncenter\" src=\"https:\/\/res.cloudinary.com\/hum-nutrition-inc\/image\/upload\/q_100\/v1541009763\/Red_Cell_Phone_Resize_HUM_Blog.jpg\" width=\"600\" height=\"450\" \/>\n<div  class=\"products-block -mx-4 md:mx-0 my-10\">\n\t\t\t\t<a href=\"https:\/\/www.humnutrition.com\/product\/18\/beauty-zzzz\" class=\"text-xs text-dark hover:!text-dark flex items-center border border-light rounded p-4 group !no-underline mb-4 relative pb-16 sm:pb-4\">\n\t\t\t\t<div class=\"shrink-0 mr-4\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/cdn.humnutrition.com\/assets\/c16ea590-7dfc-11f0-a4cc-8949e46319e3.png\" width=\"100\" height=\"100\" class=\"object-cover transition-opacity group-hover:opacity-80 !mb-0\" alt=\"Beauty zzZz\">\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"grow pr-4\">\n\t\t\t\t\t<div class=\"mb-2 flex flex-col sm:flex-row sm:items-center divide-x-0 sm:divide-x divide-light text-sm\">\n\t\t\t\t\t\t<div class=\"pt-1 pr-2 flex\">\n\t\t\t\t\t\t\t<div class=\"flex mr-1\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"mr-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"17\" height=\"16\"><path d=\"m11.532 4.697 4.353.663c.36.053.664.316.828.64.066.397 0 .791-.288 1.06l-3.157 3.193.745 4.581a1.01 1.01 0 0 1-.39.978c-.3.188-.698.25-1.022.072l-3.888-2.14-3.889 2.14c-.327.178-.724.116-1.024-.072a1.008 1.008 0 0 1-.388-.978l.745-4.581L1 7.06C.713 6.79.646 6.397.713 6c.162-.324.464-.587.827-.64l4.35-.663L7.842.563c.16-.344.5-.563.87-.563.372 0 .711.219.872.563z\"\/><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"mr-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"17\" height=\"16\"><path d=\"m11.532 4.697 4.353.663c.36.053.664.316.828.64.066.397 0 .791-.288 1.06l-3.157 3.193.745 4.581a1.01 1.01 0 0 1-.39.978c-.3.188-.698.25-1.022.072l-3.888-2.14-3.889 2.14c-.327.178-.724.116-1.024-.072a1.008 1.008 0 0 1-.388-.978l.745-4.581L1 7.06C.713 6.79.646 6.397.713 6c.162-.324.464-.587.827-.64l4.35-.663L7.842.563c.16-.344.5-.563.87-.563.372 0 .711.219.872.563z\"\/><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"mr-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"17\" height=\"16\"><path d=\"m11.532 4.697 4.353.663c.36.053.664.316.828.64.066.397 0 .791-.288 1.06l-3.157 3.193.745 4.581a1.01 1.01 0 0 1-.39.978c-.3.188-.698.25-1.022.072l-3.888-2.14-3.889 2.14c-.327.178-.724.116-1.024-.072a1.008 1.008 0 0 1-.388-.978l.745-4.581L1 7.06C.713 6.79.646 6.397.713 6c.162-.324.464-.587.827-.64l4.35-.663L7.842.563c.16-.344.5-.563.87-.563.372 0 .711.219.872.563z\"\/><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"mr-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"17\" height=\"16\"><path d=\"m11.532 4.697 4.353.663c.36.053.664.316.828.64.066.397 0 .791-.288 1.06l-3.157 3.193.745 4.581a1.01 1.01 0 0 1-.39.978c-.3.188-.698.25-1.022.072l-3.888-2.14-3.889 2.14c-.327.178-.724.116-1.024-.072a1.008 1.008 0 0 1-.388-.978l.745-4.581L1 7.06C.713 6.79.646 6.397.713 6c.162-.324.464-.587.827-.64l4.35-.663L7.842.563c.16-.344.5-.563.87-.563.372 0 .711.219.872.563z\"\/><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<svg class=\"mr-1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"17\" height=\"16\"><path d=\"m8.713 3 1.54 3.61 3.46.58L11.207 10l.588 4-3.082-1.878zm4.555 7.253 3.157-3.193c.288-.269.354-.663.288-1.06-.164-.324-.467-.587-.828-.64l-4.353-.663L9.584.562A.965.965 0 0 0 8.713 0a.965.965 0 0 0-.871.562L5.89 4.697l-4.35.663c-.363.053-.665.316-.827.64-.067.397 0 .791.287 1.06l3.157 3.193-.745 4.581a1.01 1.01 0 0 0 .388.978c.3.188.697.25 1.024.072l3.889-2.14 3.888 2.14c.324.178.721.116 1.021-.072a1.01 1.01 0 0 0 .391-.978z\"\/><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t4.6\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<div class=\"pt-1 sm:pl-2 text-medium\">\n\t\t\t\t\t\t\t261 Reviews\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"text-base font-semibold mb-1 group-hover:text-primary\">Beauty zzZz<\/div>\n\t\t\t\t\t<div class=\"mb-2\">\n\t\t\t\t\t\tpromotes a naturally restful sleep\t\t\t\t\t<\/div>\n\t\t\t\t\t<div class=\"absolute bottom-4 left-4 right-4 sm:bottom-0 sm:left-0 sm:right-0 sm:relative inline-flex justify-center bg-primary group-hover:bg-primary-light text-white rounded py-3 px-12 leading-none text-center\">\n\t\t\t\t\t\t<span class=\"pr-1.5 border-r border-primary-lightest\">$12<\/span><span class=\"pl-1.5\">SHOP NOW<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"self-start\">\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/a>\n\t\t<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Just in time for Daylight Savings.<\/p>\n","protected":false},"author":13,"featured_media":10916,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_toc_level":"h2","_toc_min":2,"footnotes":""},"categories":[834,831],"tags":[905,906,907,415],"coauthors":[],"class_list":["post-9448","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-explained","category-science","tag-blue-light","tag-insomnia","tag-melatonin","tag-sleep"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Why Blue Light Disrupts Your Sleep Patterns | HUM Nutrition Blog<\/title>\n<meta name=\"description\" content=\"Exposure to blue light from your computer and phone screens actually disrupts your endocrine system. 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Here&#039;s how you can prevent sleep loss.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.humnutrition.com\/blog\/blue-light\/\" \/>\n<meta property=\"og:site_name\" content=\"HUM Nutrition Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/humnutrition\" \/>\n<meta property=\"article:published_time\" content=\"2018-10-31T17:09:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-04-10T22:55:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.humnutrition.com\/blog\/wp-content\/uploads\/2018\/10\/Why-Blue-Light-Disrupts-Your-Sleep-Patterns-Wellnest-Feature.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1440\" \/>\n\t<meta property=\"og:image:height\" content=\"670\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Zena Wozniak\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@HUMnutrition\" \/>\n<meta name=\"twitter:site\" content=\"@HUMnutrition\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Zena Wozniak\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/\"},\"author\":{\"name\":\"Zena Wozniak\",\"@id\":\"https:\/\/www.humnutrition.com\/blog\/#\/schema\/person\/f9fba5e7383ef5c185ee3e6d5e766570\"},\"headline\":\"Why Blue Light Disrupts Your Sleep Patterns\",\"datePublished\":\"2018-10-31T17:09:20+00:00\",\"dateModified\":\"2019-04-10T22:55:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/\"},\"wordCount\":585,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.humnutrition.com\/blog\/wp-content\/uploads\/2018\/10\/Why-Blue-Light-Disrupts-Your-Sleep-Patterns-Wellnest-Feature-jpg.webp\",\"keywords\":[\"blue light\",\"Insomnia\",\"Melatonin\",\"sleep\"],\"articleSection\":[\"Explained\",\"Science\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.humnutrition.com\/blog\/blue-light\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/\",\"url\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/\",\"name\":\"Why Blue Light Disrupts Your Sleep Patterns | HUM Nutrition Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.humnutrition.com\/blog\/blue-light\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.humnutrition.com\/blog\/wp-content\/uploads\/2018\/10\/Why-Blue-Light-Disrupts-Your-Sleep-Patterns-Wellnest-Feature-jpg.webp\",\"datePublished\":\"2018-10-31T17:09:20+00:00\",\"dateModified\":\"2019-04-10T22:55:10+00:00\",\"description\":\"Exposure to blue light from your computer and phone screens actually disrupts your endocrine system. 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