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“More recently, a variety of studies have demonstrated that ultraviolet light induces peroxidation in unsaturated fats, but not saturated fats, and that this occurs in the skin as well as in vitro. Rabbit experiments, and studies of humans, showed that the amount of unsaturated oil in the diet strongly affects the rate at which aged, wrinkled skin develops. The unsaturated fat in the skin is a major target for the aging and carcinogenic effects of ultraviolet light, though not necessarily the only one.” -Ray Peat
I heard recently that wearing sunglasses interferes with the eyes and the signals they send out to the skin, causing sunburns…
“Wearing sunglasses can indirectly affect melanin production and potentially increase the risk of sunburn. Melanin has several functions, one of which is to protect the skin from the harmful effects of ultraviolet (UV) radiation from the sun. When the skin is exposed to UV radiation, melanocytes produce more melanin to absorb the UV rays and protect the skin from damage, which leads to a tanning effect.
Sunglasses block significant UV radiation, protecting your eyes from damage. However, they can also indirectly affect your body’s response to sunlight. When you wear sunglasses, your eyes perceive less light, and your body may interpret this as being in a less sunny environment. As a result, your body might not send the same signals to produce melanin in response to sunlight.
The lack of melanin production could potentially lead to an increased risk of sunburn, as your skin may not have the same level of protection against UV radiation. Additionally, people wearing sunglasses might feel more comfortable staying in the sun for extended periods, further increasing the risk of sunburn and other sun-related skin damage.”
The Surprising Health Benefits of Not Wearing Sunglasses: Sun Exposure, Melanin, and Nitric Oxide
Q: Why not use sun-blockers, so you can get light without getting burned?
“If a sunscreen lotion is based on the use of an opaque reflective material, such as zinc oxide or titanium oxide, that substance remains mostly on the surface of the skin. This should make it fairly harmless, though it is possible that traces of titanium
could be absorbed with oils into the skin, where it could be made toxic by interaction with ultraviolet rays.However, other chemicals used in the sun screen lotions, such as PABA derivatives, also react dangerously with light, and are easily absorbed in significant quantities into the deeper layers of the skin, where they can cause mutations.” -Ray Peat
https://expulsia.com/health/peat-index/sunlight-using-it-to-enhance-life.pdf
“Finally, long hours of daylight are known to increase progesterone production, and long hours of darkness are stressful. Annually, our total hours of day and night are the same regardless of latitude, but different ways of living, levels of artificial illumination, etc., have a strong influence on our hormones. In some animal experiments, prolonged exposure to light has delayed some aspects of aging.” -Ray Peat
“Regular good light exposure is probably important for preventing the displacement of copper by iron.” – Ray Peat
“It is hard to believe that the humble sunshine “vitamin” is also a powerful antibiotic, but that’s what the study below describes. Some of the effects were due to vitamin D activating the eponymous receptor (VDR), which increases T-cell activity. However, the study also demonstrates that vitamin D stimulates the release of antibacterial peptides by the gastric mucosa, as well as having direct antibiotic effects through some of its metabolites. The article does not mention doses, but other in-vivo studies I have seen on vitamin D for bacterial infections suggest that doses in the 5,000 IU – 10,000 IU range daily for 5-7 days may be sufficient to cure a bacterial infection.
“…In summary, the role of Vit D3 in the eradication of HP is certain and includes its classical pathway of binding to VDR to regulate the body’s immune defense and increase the secretion of AMPs, while the nonclassical pathway is a novel signaling pathway that initiates activation of the PDIA3-STAT3-MCOLN3-Ca2+ axis to reactivate the acidification and degradation of lysosomes and the collapse of the membrane structure of HP cells via degradation products. VitD3 represents a novel approach and a new option for the eradication of HP, but there are still some pathways or mechanisms that remain unclear and need further in-depth research and development.” -Haidut
This was posted by @J.R.L in a link he posted in his thread on “Blood Irradiation”. I had read recently that sunglasses are not good for the eyes, but I had no idea that many health issues issues resolved removing them…
“Glass blocks UV light, so since much of the sunlight we are exposed to is filtered through glass, modern life prevents us from having access to that light, and hence there is a widespread deficiency of UV light in our society.
•Since the skin has difficulty absorbing UV light, we instead receive much of the light which enters our body through the eyes. In turn, when individuals where glasses that block sunlight from entering their eyes, a wide variety of health problems can ensue that resolve once the glasses are addressed.”
This is also from the article @J.R.L posted…
“Note: to illustrate the importance of sunlight, a 20 year prospective study of 29,518 Swedish women found that those who avoided sunlight were 130% more likely to die than women who had regular sunlight exposure, and much more likely to develop a variety of medical conditions (e.g., they were twice as likely to get cancer).“
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