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Fri Feb 03, 2017 11:28 am  |
In general sunlight is good for you. Sunbathers live longer than those who do not indulge. Sun is good for heart health and protects against many cancers. Yes some are prone to skin cancer but that is generally easily curable AND the reduction in death from other cancers and heart disease is LARGE. Also I study nanomaterials and also their use in medicine. Sun lotions that contain very small particles can be dangerous in my opinion. Paradoxially outdoor workers have LESS not more incidence of melanoma the most dangerous form of skin cancer even though they get MANY times the amount of UV radiation. It is important for kids not to get bad sunburn and there are many new types of swimwear (rash guards) that protect.
Here are two recent articles:
P. G. Lindqvist, E. Epstein, K. Nielsen, M. Landin-Olsson, C. Ingvar, H. Olsson. Avoidance of sun exposure as a risk factor for major causes of death: a competing risk analysis of the Melanoma in Southern Sweden cohort. Journal of Internal Medicine, 2016; DOI: 10.1111/joim.12496
Wiley. "Why do sunbathers live longer than those who avoid the sun?." ScienceDaily. ScienceDaily, 21 March 2016. <www.sciencedaily.com/releases/2016/03/160321135854.htm>. |
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baneblades
New Member
 
Joined: 27 Jan 2017
Posts: 4
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Thu Feb 09, 2017 10:02 pm |
| Sunlight and skin cancer, I yet cannot comprehend whether sunlight is harmful or beneficial for the skin. |
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Fri Feb 10, 2017 3:17 am |
| The Vit D and other goodies in sunlight are without doubt beneficial but the trouble is that it’s the harmful UVA and UVB rays which have the ability to penetrate deep into the derma and cause damage to the skin, that doesn’t always show up right away. Even if you used sun protection prior to the 90’s – we didn’t know it was the UVA and UVB rays that were the bad guys and most people got exposed to them as a result, and the issue is that the damage doesn’t show up right away, sometimes it takes 10 or 20 years to shift to the surface. UVA and UVB can penetrate glass, windows etc so even if you stayed indoors – unless you were living in complete darkness its likely that at some point you will have been exposed to them. There are things that you can do though with sun exposure. For example Vit C is great to apply after being in the sun and counteracts the harmful UVA and UVB rays. Sun protection is a must for starving off future possible damage. |
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Fri Feb 10, 2017 9:05 pm |
There are two wavelength ranges that interactwith the skin UVA (longer wavelength) and UVB (shorter wavelenth.UVB is responsible for vit D production and UVA is primarily responsible for skin damage.
Inside an office or from tanning beds you get UVA mostly.
The below is a quote from the J. of Medical Hypotheses (vol.72(4), 2009 pg. 434-443) trying to explain why indoor workers get more melanomas than those who work primarily outdoors.
"We hypothesize that one factor involves indoor exposures to UVA (321–400nm) passing through windows, which can cause mutations and can break down vitamin D3 formed after outdoor UVB (290–320nm) exposure, and the other factor involves low levels of cutaneous vitamin D3.
After vitamin D3 forms, melanoma cells can convert it to the hormone, 1,25-dihydroxyvitamin D3, or calcitriol, which causes growth inhibition and apoptotic cell death in vitro and in vivo."
They are saying that UVB protects agains melanoma whereas UVA which goes through windows may be causal.
From a Lancet review (Vol. 363, 2004, pgs. 728-730 best British med journal):
"Paradoxically, outdoor workers have a decreased risk of melanoma compared with indoor workers, suggesting that chronic sunlight exposure can have a protective effect."
It should give pause that the rates of skin cancer are increasing even though the fraction of people in this country working outdoors is decreasing significantly. In addition, there are many more studies than I have cited above that show sunlight decreases heart disease and every other type of cancer. I say Viva la soliel.
That said DO NOT use sun tan booths they put out mostly UVA at greater than 10 times the intensity of sunlight a real prescription for skin damage.
On top of that most sun tan lotions are loaded with nanomaterials (particles less than 100nm is at least one dimension). Depending on size and surface functionality these can go through the skin and into cells. There is significant evidence that these may be contributors to ill effects although there are no very long term studies. Although this is an evolving field it is my direct area of research so I do not use lotions or cosmetics with nanoparticles. |
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Sat Feb 11, 2017 10:39 am |
| Wow, I never thought much about these sunscreen products. Sharky's posts here have a lot of information in them that I have never read before. Thanks for the informative read. |
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Fri Mar 03, 2017 8:57 am |
Sunlight is good unless you expose yourself too much to it. I would always wear a hat on beach to avoid the sun burn.
Just to keep in mind ,most of the sunscreens sell in North America do protect you from getting tanned, they only make sure that you don't get sun burnt. |
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Sat Mar 11, 2017 2:24 pm |
| Sunlight is good for you, Vitamin D. 15 minutes a day is suggested as beneficial. |
_________________
47, former sunworshipper, skincare addict, oily T-zone, fair skinned, love Vita A, some hyperpigmentation, microneedler. |
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Fri Mar 24, 2017 7:27 pm |
| baneblades wrote: |
| Sunlight and skin cancer, I yet cannot comprehend whether sunlight is harmful or beneficial for the skin. |
everything should keep moderation. A little sunshine can give you good healthy but so long time stay in sun may be a killer for your skin |
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Thu Jun 04, 2020 8:58 am |
Anyone that tells you that prolonged exposure to the sun is beneficial for you is misguided at best.
Moderation is key here. |
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Wed Feb 03, 2021 12:25 am |
| Hello! I know that vitamin D is good for the skin, but you also have to be careful. Now, in winter, I realize that it is especially lacking, and my skin suffers from it. Thank you for your answers. |
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Sun Feb 07, 2021 8:52 pm |
This study does not account for the fact many individuals with a history of skin cancer are sun avoidant---thus the incidence of skin cancer among those who are sun exposed may not be indicative of the fact that sun exposure is not a risk factor in skin cancer.
It seems this study is pointing less to the benefits of sun exposure and more so to the protective effects of vitamin d--and this can be achieved by oral therapy. |
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Mon Feb 08, 2021 4:45 am |
| I think its like most things, its all about balance. Whilst I agree some sun is good for us, I think its easy to overdo it too. For me, I had breast cancer several years ago and am in remission (thank God) but I know that I have to take Vitamin D supplentation (Dr has prescribed it) and I recall reading that most people are deficient in vitamin D. Vit D is a must for most folk, as it helps in so many ways. Our bodies cant absorb calcium without it (and that is key in aging). |
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RobiN0963
New Member
Joined: 08 Feb 2021
Posts: 6
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Wed Feb 10, 2021 6:34 am |
| I have a pale skin, so during the sunny weather I feel like my skin burns. I can't leave my house without a SPF scream |
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dennisleon
New Member
Joined: 31 Jan 2019
Posts: 6
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Thu Nov 11, 2021 10:49 pm |
| Sunlight triggers the synthesis of vitamin D within the body. The Sun light to protect your skin against early wrinkles, damage, and disease. Consult with Lucere Skin care |
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MichalMad
New Member
Joined: 03 Jan 2022
Posts: 5
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Tue Jan 04, 2022 4:46 am |
| I think we get enough sunlight and so even when we walk down the street |
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adwivedi22
New Member
Joined: 04 Mar 2021
Posts: 3
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Thu Jan 27, 2022 5:58 am |
| Sunlight releases serotonin (the happiness hormone) in your brain, boosts your bone health, and actually might help treat several skin conditions. |
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| Sat Nov 23, 2024 4:19 am |
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