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# Circadian Light

Your source for circadian rhythm lighting

## Sitemaps

- [XML Sitemap](https://circadianlight.org/sitemap.xml): Contains all public & indexable URLs for this website.

## Posts

- [Night Shift Work and Breast Cancer](https://circadianlight.org/night-shift-work-and-breast-cancer/) - What the Science Actually Says By Dr. Martin Moore-Ede, MD, PhD. Co-discoverer of the suprachiasmatic nucleus, the master biological clock in the human brain. Founder of the Laboratory for Circadian Physiology at Harvard Medical School. Women who work night shifts under bright electric light have higher rates of breast cancer than women who do not,
- [Should LED Lights Carry Health Warnings?](https://circadianlight.org/should-led-lights-carry-health-warnings/) - Why 248 Scientists Now Say Yes By Dr. Martin Moore-Ede, MD, PhD Co-discoverer of the suprachiasmatic nucleus, the master biological clock in the human brain. Founder of the Laboratory for Circadian Physiology at Harvard Medical School. In 2023, 248 scientists who study light and health reached a consensus on twenty-five statements: the blue-rich LED lighting

## Pages

- [Home](https://circadianlight.org/) - Circadian Light is your resource for lighting products and research materials related to the benefits of circadian lighting design & circadian product info
- [Circadian Blog](https://circadianlight.org/circadian-blog/) - [et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” background_color=”#F1F5F5″ custom_padding=”9px||9px||true|false” global_colors_info=”{}”][et_pb_row _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” header_font=”|300|||||||” header_text_align=”center” header_text_color=”#0468BF” header_font_size=”36px” global_colors_info=”{}”]Circadian Blog[/et_pb_text][/et_pb_column][/et_pb_row][/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”102deg” background_color_gradient_stops=”rgba(1,69,137,0.3) 0%|rgba(4,138,191,0) 100%” background_color_gradient_overlays_image=”on” background_image=”https://circadianlight.org/wp-content/uploads/2024/04/education-mountain-sunset.jpg” custom_padding=”|0px|600px|0px|false|false” global_colors_info=”{}”][et_pb_row column_structure=”2_3,1_3″ make_equal=”on” _builder_version=”4.25.0″ _module_preset=”default” width=”98%” max_width=”1200px” global_colors_info=”{}”][et_pb_column type=”2_3″ _builder_version=”4.25.0″ _module_preset=”default” background_color=”#F1F5F5″ custom_padding=”25px|25px|25px|25px|true|true” global_colors_info=”{}”][et_pb_blog fullwidth=”off” include_categories=”all” show_author=”off” _builder_version=”4.25.0″ _module_preset=”default” global_colors_info=”{}”][/et_pb_blog][/et_pb_column][et_pb_column type=”1_3″ _builder_version=”4.24.3″
- [Education](https://circadianlight.org/education/) - How to order "The Light Doctor: Using Light to Boost Health, Improve Sleep, and Live Longer" by Dr. Martin Moore-Ede. Now an Amazon best seller!
- [Campaign](https://circadianlight.org/campaign/) - New DOE energy rules favor bright blue-pump LEDs, and ignore health concerns. Fight back by joingin our campaign to protect healthy lighting innovation
- [Light Bulbs](https://circadianlight.org/light-bulbs/) - Take action by replacing you light bulbs in your bedroom and in other places where you spend evening hours with zero blue light bulbs. (
- [Thank You](https://circadianlight.org/thank-you/) - We are delighted to learn about your interest in healthy lighting. To learn more and keep updated, subscribe to The Light Doctor on Substack
- [Research](https://circadianlight.org/research/) - CIRCADIAN Light Research Center: Optimizing Light for Human Health and Performance by studying the impacts of LED and other lighting on human health
- [DLC Comments](https://circadianlight.org/dlc-comments/) - DLC's excessively high lumens per watt standards has to go to creating visual brightness (green and yellow wavelengths) and not provide the circadian lighting.
- [DOE Petition](https://circadianlight.org/doe-petition/) - On March 31, 2025, over 200 Americans submitted a formal petition for to the DOE. regarding the upcoming ban on healthy light bulbs
- [Get Updated on the Petition](https://circadianlight.org/get-updated-on-the-petition/) - [et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” background_color=”#F1F5F5″ custom_padding=”9px||9px||true|false” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” header_font=”|300|||||||” header_text_align=”center” header_text_color=”#0468BF” header_font_size=”36px” hover_enabled=”0″ global_colors_info=”{}” theme_builder_area=”post_content” sticky_enabled=”0″]The DOE Petition for Healthy Lighting[/et_pb_text][/et_pb_column][/et_pb_row][/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”102deg” background_color_gradient_stops=”rgba(1,69,137,0.3) 0%|rgba(4,138,191,0) 100%” background_color_gradient_overlays_image=”on” background_image=”https://circadianlight.org/wp-content/uploads/2024/04/education-mountain-sunset.jpg” custom_padding=”|0px|600px|0px|false|false” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row make_equal=”on” _builder_version=”4.25.0″ _module_preset=”default” width=”98%” max_width=”1200px” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.25.0″ _module_preset=”default”
- [Eyewear](https://circadianlight.org/eyewear/) - Make sure you choose scientifically-optimized circadian blue-light blocking lenses that are designed to protect your sleep-wake cycle. Order from BlueSafe24
- [Background on the Healthy Lighting Campaign](https://circadianlight.org/campaign/background-on-the-healthy-lighting-campaign/) - [et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” background_color=”#F1F5F5″ custom_padding=”9px||9px||true|false” global_colors_info=”{}”][et_pb_row _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_column type=”4_4″ _builder_version=”4.24.3″ _module_preset=”default” global_colors_info=”{}”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” header_font=”|300|||||||” header_text_align=”center” header_text_color=”#0468BF” header_font_size=”36px” global_colors_info=”{}”]Background Information for the Healthy Lighting Campaign[/et_pb_text][/et_pb_column][/et_pb_row][/et_pb_section][et_pb_section fb_built=”1″ _builder_version=”4.24.3″ _module_preset=”default” use_background_color_gradient=”on” background_color_gradient_direction=”102deg” background_color_gradient_stops=”rgba(1,69,137,0.3) 0%|rgba(4,138,191,0) 100%” background_color_gradient_overlays_image=”on” background_image=”https://circadianlight.org/wp-content/uploads/2024/04/education-mountain-sunset.jpg” custom_padding=”|0px|600px|0px|false|false” global_colors_info=”{}”][et_pb_row column_structure=”1_2,1_2″ make_equal=”on” _builder_version=”4.25.0″ _module_preset=”default” width=”98%” max_width=”1200px” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”4.25.0″ _module_preset=”default” background_color=”#F1F5F5″ custom_padding=”25px|25px|25px|25px|true|true” global_colors_info=”{}”][et_pb_text _builder_version=”4.25.0″ _module_preset=”default” header_2_font_size=”30px”
- [Display Screens](https://circadianlight.org/display-screens/) - Display screens of computers and phones are an important source of uncontrolled blue light. Korrus has computer screens that automatically balance light
- [Light Fixtures](https://circadianlight.org/light-fixtures/) - With Lumium Circadian Blue architectural fixtures you can protect and enhance our natural rhythms and your employee health.

## Categories

- [Hazards of LED Lighting](https://circadianlight.org/category/hazards-of-led-lighting/)

## Tags

- [cancer](https://circadianlight.org/tag/cancer/)
- [breast cancer](https://circadianlight.org/tag/breast-cancer/)
- [nightshift](https://circadianlight.org/tag/nightshift/)
- [led light hazards](https://circadianlight.org/tag/led-light-hazards/)