Chapter

The Surprising Link Between Light and Sex
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45:00 - 53:57 (08:57)

Exposure to UV blue light can increase testosterone and estrogen in animals and humans, leading to a higher desire to mate. This effect is not caused by light exposure to the eyes but rather to the skin.

Clips
Exposing the skin to UV blue light, particularly in animals like mice and humans, increases levels of testosterone and estrogen, leading to a greater desire to mate.
45:00 - 51:58 (06:57)
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Hormones
Summary

Exposing the skin to UV blue light, particularly in animals like mice and humans, increases levels of testosterone and estrogen, leading to a greater desire to mate. This is because light inhibits melatonin, which suppresses the gonadal axis, and so increased light means higher hormone output from the gonads.

Chapter
The Surprising Link Between Light and Sex
Episode
Using Light (Sunlight, Blue Light & Red Light) to Optimize Health
Podcast
Huberman Lab
Researchers establish a baseline for measuring hormones in the absence of sunlight and determine the optimal amount of UVB light exposure for the body.
51:58 - 53:57 (01:59)
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UVB Light
Summary

Researchers establish a baseline for measuring hormones in the absence of sunlight and determine the optimal amount of UVB light exposure for the body.

Chapter
The Surprising Link Between Light and Sex
Episode
Using Light (Sunlight, Blue Light & Red Light) to Optimize Health
Podcast
Huberman Lab