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**BrewKnurd** · 10-05-2011, 11:13 PM

Quote:

Originally Posted by sudsmcgee

Fact: the human body can easily make 10,000 IU of vitamin D in 10-20 minutes of full body sun exposure.

Fact: the typical human diet provides less than 600 IU of vitamin d daily.

Fact: the vast majority of Americans are vitamin D deficient.

Fact: outside of supplements, humans cannot get enough vitamin d in the absence of sun exposure.

Fact: these facts do prove or even suggest that anyone should avoid sunscreen entirely.

**BrewKnurd** · 10-05-2011, 11:33 PM

Quote:

Originally Posted by sudsmcgee

Actually, sunscreen has never been proven to prevent skin cancer (or any other cancer for that matter), but the vitamin D that it inhibits CAN prevent many forms of cancer. Many scientists now say that sunscreen might actually increase skin cancer rates (melanoma in particular since it has a strong tie to vitamin D levels).

But, back topic of how bad a few grams of CO2 is for me.....

Oh, and yes, there are studies showing that sunscreen reduces skin cancer. http://www.skincancer.org/daily-sunscreen-use-cuts-melanoma-risk-in-half-study-finds.html

http://cebp.aacrjournals.org/content/15/12/2546.short

http://www.sciencedirect.com/science/article/pii/S0140673698121682

**sudsmcgee** · 10-05-2011, 11:33 PM

No, but the incidence of vitamin d deficiency is indirectly proportional to sunscreen use. That is fact.

**BrewKnurd** · 10-05-2011, 11:38 PM

Quote:

Originally Posted by sudsmcgee

No, but the incidence of vitamin d deficiency is indirectly proportional to sunscreen use. That is fact.

And its a bad idea to drink sunscreen. That is also fact.

**sudsmcgee** · 10-05-2011, 11:41 PM

Quote:

Originally Posted by discnjh

Oh, and yes, there are studies showing that sunscreen reduces skin cancer. http://www.skincancer.org/daily-sunscreen-use-cuts-melanoma-risk-in-half-study-finds.html

http://cebp.aacrjournals.org/content/15/12/2546.short

http://www.sciencedirect.com/science/article/pii/S0140673698121682

Funny, 'cause then there's articles like this

http://news.bbc.co.uk/2/hi/health/411226.stm

http://www.aolnews.com/2010/05/24/study-many-sunscreens-may-be-accelerating-cancer/

acuenca · 10-05-2011, 11:43 PM

Holy Jesus... Don't wear sunscreen and CO2 used in home brew kegging is carcinogenic?? Definitely two facts I did NOT learn in medical school... that and the insanely high incidence of Vit D deficiency....cause the last time I saw someone with rickets was....?????

**sudsmcgee** · 10-05-2011, 11:45 PM

The bottom line is that we need to limit our exposure to the suns UV rays to prevent skin cancer. The longer you stay in the sun beyond the level that results in reddening of the skin, the greater the risk of skin cancer. This is true regardless of whether or not you use suncreen.

Sun exposure below the threshold resulting in skin reddening is safe and helps contribute to vitamin D production. Vitamin D has been shown to reduce the risk of multiple cancers.

**motobrewer** · 10-05-2011, 11:50 PM

Quote:

Originally Posted by acuenca

....cause the last time I saw someone with rickets was....?????

best post ever.

argument, over.

**sudsmcgee** · 10-05-2011, 11:51 PM

Quote:

Originally Posted by acuenca

Holy Jesus... Don't wear sunscreen and CO2 used in home brew kegging is carcinogenic?? Definitely two facts I did NOT learn in medical school... that and the insanely high incidence of Vit D deficiency....cause the last time I saw someone with rickets was....?????

Ummm, you might want to go back to school....

http://www.ncbi.nlm.nih.gov/pubmed/21678784

http://www.ncbi.nlm.nih.gov/pubmed/19580464

http://www.ncbi.nlm.nih.gov/pubmed/19255005

SwampassJ · 10-05-2011, 11:53 PM

I'm pretty sure the SPF-30 I put on is doing less harm than the 8 hours of sun I get a day. Oh **** I just grew dramatic trolling melanoma.