About Our Speaker – Catherine Darley, ND

Catherine Darley

Catherine Darley


Catherine Darley, ND, is a leader in integrative sleep medicine. She founded The Institute of Naturopathic Sleep Medicine, Inc in 2003, and since then has helped people of all ages sleep well using behavioral and naturopathic approaches for sleep disorders. Dr. Darley led the Start School Later initiative in Seattle, which succeeded in improving school hours for more than 50,000 students.

She teaches at Bastyr University and the National College of Natural Medicine and is on the inaugural panel of experts for the Sleep Cycle Institute. Dr. Darley is published in numerous professional journals, has been quoted in several popular magazines, and has appeared on TV to share her expertise. She received her Doctor of Naturopathic Medicine from Bastyr University and completed a preceptorship at the Stanford University Sleep Disorders Center.

She is an expert and dynamic speaker, teaching a wide range of groups through engagement, storytelling, and with a clear explanation of the mechanisms of sleep, circadian physiology, and treatment protocols.

Catherine Darley’s Upcoming Sessions

“Therapeutic Use of Light and Dark”

The natural world is a world with rhythmic variability, variability in light and dark throughout the day, and seasonal changes in light too. Now in the electrified world we can control our light levels, keeping it artificially bright into the night. At the same time, we are in dim light during the day in our built environment. The lack of daytime light along with the lack of dark at night has serious health consequences. We will first look at how light and dark impact physiology.

Then we will discuss the health impacts of disordered light & dark exposure from vitamin D and bone health, to sleep and circadian rhythms, to Seasonal Affective Disorder and mental health, among more of the conditions common in primary care.

We will conclude with specific guidance on healthful light and dark recommendations.


We are NANCEAC accredited in the following states, AZ,CA, CO, CT, District of Columbia, Kansas, MN, MT, NM, ND, OR, UT, VT, WA, Canada: Alberta, BC might need pre-approval: Maine , HI, Maryland, RI, NH


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