Dr. Jack Kruse on Junk Light, 5G, Optimizing Sunlight and Longevity

Dec 22, 2022

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INSIGHT

Blue Light's Hidden Childhood Dangers

Blue light from modern screens damages the retina and brain, disrupting dopamine and mood regulation.
Kids' brains are more sensitive due to incomplete myelination, making early screen exposure harmful.

INSIGHT

Sunlight Blockers Harm Health

Sunscreen blocks UV light vital for mitochondrial melatonin production and vitamin D synthesis.
Lack of sunlight causing low vitamin D correlates with higher melanoma risk, inversing common beliefs.

ADVICE

Improve Home Lighting Smartly

Open windows indoors to avoid light filtering through glass, which distorts sunlight spectrum.
Introduce red light indoors and encourage outdoor homework to reduce blue light exposure.

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Episode Highlights With Dr. Kruse

What junk light is and why it can be so harmful
Why sunlight is so important and not dangerous... and why it is so important for kids
The problems with screens that you probably didn’t know of
Understanding light functionally
Why light is a medicine
Six meta analysis show that lack of sunlight is more dangerous to your health than smoking
The deeper problems with blue light beyond just sleep disturbances
How blue light cases break down in the retina and brain changes and destroys dopamine
Why he recommends avoiding melatonin supplementation in kids
Where melatonin is actually made (in the mitochondria) and how to optimize it
The reasons he recommends avoiding sunscreen and increasing sunlight exposure, especially in kids
Low Vitamin D levels correlate highly with melanoma and the sun helps increase Vitamin D levels… so why lack of sunlight is more correlated to melanoma than sun exposure and how blue light comes into play
Why sunglasses decrease melanin production in the skin and why he says to avoid them because you’ll be more sensitive to the sun
Ways to optimize your light exposure
Light exposure tips: open windows inside so it isn’t filtered through glass
More reasons to get morning sunlight
A reason kids don't need as much sunlight as their grandparents do
How to do grounding correctly
His water recommendations for optimizing this for our kids
How screens are dehydrating, especially to kids
The food and light connection and what to know about water
His top tips for longevity
Mitochondrial DNA is only inherited through the mom
What transgenerational epigenetics is and why we need to understand it as parents
The real deal on Vitamin D (a neurosteroid he says not to supplement) and Omega-3

Resources We Mention

Dr. Jack Kruse - website
Dr. Jack Kruse - Membership and Patreon
Spectroscope
A week’s worth of camping synchs internal clock to sunrise and sunset, CU-Boulder study finds
Going Somewhere: Truth about a Life in Science by Andrew A. Marino
Health and Light: The extraordinary Study that Shows How light Affects Your Health and emotional well being by John N. Ott
Power, Sex, Suicide: Mitochondria and the meaning of life<