Questions tagged [sun-exposure]

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Why do you not need sun protection whe the UV index is 3?

In Australia, they recommend sun protection when the UV index is above 3. Why is this? Surely whenever it's above 0 there are still UV rays hitting your skin? Would 10 minutes in the sun with a UV ...
4
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0answers
168 views

Craving sunlight with melatonin?

I have noticed a very strange, but positive, side effect of taking melatonin supplements or cherries high in melatonin (I have blood tests which confirmed food allergies, and apparently my absorption ...
3
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0answers
41 views

Are cheap sunglasses dangerous?

Does having any plastic between your eyes and the environment automatically provide UVA and UVB protection? Or do the lenses actually have to be coated (or be comprised of a special type of plastic) ...
2
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0answers
31 views

Do bearded faces age slower?

Recent research indicates that UV exposure may be responsible for around 80% of facial skin aging symptoms. The more unprotected exposure from the sun, the more the skin ages. Does the evidence show ...
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0answers
81 views

Test UV protection on sunglasses

I bought sunglasses in China that claims to have UV400 protection. I'd like to test this as my eyes' health is on the line :) Is there any way to check the maximum UV amount these glasses can protect ...
2
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1answer
37 views

Safe UV exposure time

How long can our body be exposed to UV to not cause health problems like skin cancer, etc,. In some parts of the USA, the UV index can reach High (7-9). I'm trying to understand if I need to stay ...
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0answers
43 views

How dangerous for the human skin are naturally occurring wavelengths above 380nm?

I read on https://www.cancer.org/cancer/cancer-causes/radiation-exposure/uv-radiation.html: UVA rays have the least energy among UV rays. These rays can cause skin cells to age and can cause some ...
1
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0answers
28 views

Is it better to tan for 10 minutes without sun protection or the equivalent x amount of minutes with sunscreen?

For tanning efficiency purposes (i.e. getting as tanned as possible with as little skin damage as possible) is it better to tan for 10 minutes without sunscreen or the equivalent x amount of minutes ...
1
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0answers
243 views

How long can a fair skinned person be safely exposed to the sun without sunscreen?

I realize the answer to this question varies with the time of day (most recommendations are to avoid exposure between 10am and 2pm), latitude, altitude, medication and other factors, and goes as far ...
1
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0answers
21 views

Relationship between UPF/SPF and reduction in UV damage

I'm trying to untangle the relationship between the UPF/SPF rating of clothing or sunscreen and its effectiveness at reducing health risks from exposure to sunlight. The first complication is that a ...
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0answers
22 views

How many micromorts do you get from 1 UV-index-hour?

I'm trying to get a good estimate of the risks associated with sun exposure. I'm assuming things scale linearly (the UV index units, which need a name ("UVees"?) are linear). This may not be ...