Harvard sleep scientist Dr. Steven Lockley explains how the light in your home affects your sleep, energy, and circadian rhythm, and why most of us are using the wrong light at the wrong times.
This episode was originally recorded under our former name, Best Kind Podcast, now The Aligned Interior.
Prefer to listen? You're in the right place. (On YouTube this episode is presented with images due to a recording issue.)
In this episode we explore circadian lighting and health with Dr. Steven Lockley, a Harvard Medical School sleep scientist and co-founder and chief scientist of Timeshifter. We get into how light governs your circadian rhythm, why standard home and office lighting works against you, and how to light your space in sync with your body clock.Timestamps:
- (0:00) Introduction
- (1:38) What are the differences between the visual system and the non visual system?
- (4:35) I'd love to hear more about your research and how we know the effects of lighting on the non visual system to be true.
- (9:00) How would you recommend lighting for our eyes' non visual system for our home environment to help facilitate health and wellbeing
- (10:47) What are some simple things that you could recommend for someone to do in their home to have the most immediate impact to redesign their lighting to be more effective for the non visual system?
- (15:39) Does daylight have an effect on the non visual system that is beneficial for health and wellbeing?
- (18:20) Is there a recommended amount of time that you shut off all lights & devices before bed?
- (23:11) What are some of the studies done that proves that blue short wave length, 5000K or higher temperature lighting has an alerting effect on the body?
- (25:45) Could you speak to the mood aspect of the effects of this type of light?
- (27:47) Has anyone done any brain scans on natural light to see if there's anything different that shows up?
- (29:07) If someone were to go to their local hardware store to purchase bulbs for their home to have more healthy lighting for their home (visual and non visual system) what would you recommend they look for?
- (31:54) Is there such as thing of making the body too alert with light?
- (34:41) What colors do and don't support the lighting design for the non visual system?
- (41:19) Does a 5000K, short blue wave length light make your space look blue?
- (46:57) Are there any lighting design tools you recommend for designers or lighting design enthusiasts?
- (49:48) Is it possible that the sun may offer additional benefits to the human system that is yet to be discovered?
- (51:34) If you could snap your finger and you could change one fundamental thing about lighting design globally what would it be?
- (52:43) Closing thoughts
In this episode:
- How light controls your circadian rhythm.
- Why blue light wakes you and red light calms you, the opposite of what most assume.
- Why standard home and office lighting harms sleep and health.
- How to light your space in sync with your body.
Guest: Dr. Steven Lockley is a neuroscientist at Brigham and Women's Hospital, Associate Professor of Medicine in the Division of Sleep Medicine at Harvard Medical School, and co-founder and chief scientist of Timeshifter. He is an international authority on circadian rhythms and sleep.
Resources:
ALFA by Solemma
Timeshifter (Dr. Lockley's company)
Prefer to watch? The full episode (presented with images) is on YouTube @thealignedinterior.
Music in episode from TELL YOUR STORY music by iksonâ˘
Disclaimer:
- The Aligned Interior Podcast is for general information purposes only and does not constitute the practice of medicine or other health care services, including giving medical advice.
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