I've been trying to understand a little bit more on UV rays (and sun screen) and the good and bad of sun exposure. Anyone has any good materials to read about this ?
From the little i get, only 3% of sunlight is UV ray, and out of that 95% is UVA, 5% is UVB (UVC is blocked by the ozone)
cons of UVB - Excessive UVB is harmful and can cause skin cancer
pros of UVB - Stimulates Vitamin D3 production, increases seratonin (your happy drug), improves many skin condition and in fact UVB is reproduced as solar radiation (heliotherapy) or artificial UV radiation (phototherapy) to fix skin problems, produces melanin which protects the skin.
all sunscreen blocks UVB, and some blocks both
As for UVA, not too harmful apparently, but too much can cause collagen damage and premature aging. UV rays can also help reduce blood pressure, heart problems and kill bacteria.
This curiosity came abt as I was reading on sunscreens and wondering if there is more harm than good.
There are a lot more articles out there on how bad the sun is compared to the good of it. If you have more info on the good and bad of sun (and sunscreens), would love the input!
pam
npub1pv…kdx8c
2023-08-24 19:47:01
Author Public Key
npub1pvgcusxk7006hvtlyx555erhq8c5pk9svw57snlxujpkgnkup89sekdx8cPublished at
2023-08-24 19:47:01Event JSON
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"content": "I've been trying to understand a little bit more on UV rays (and sun screen) and the good and bad of sun exposure. Anyone has any good materials to read about this ? \n\nFrom the little i get, only 3% of sunlight is UV ray, and out of that 95% is UVA, 5% is UVB (UVC is blocked by the ozone)\n\ncons of UVB - Excessive UVB is harmful and can cause skin cancer\n\npros of UVB - Stimulates Vitamin D3 production, increases seratonin (your happy drug), improves many skin condition and in fact UVB is reproduced as solar radiation (heliotherapy) or artificial UV radiation (phototherapy) to fix skin problems, produces melanin which protects the skin. \n\nall sunscreen blocks UVB, and some blocks both \n\nAs for UVA, not too harmful apparently, but too much can cause collagen damage and premature aging. UV rays can also help reduce blood pressure, heart problems and kill bacteria.\n\nThis curiosity came abt as I was reading on sunscreens and wondering if there is more harm than good. \n\nThere are a lot more articles out there on how bad the sun is compared to the good of it. If you have more info on the good and bad of sun (and sunscreens), would love the input! ",
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