overall advice
updated advice here – http://www.bad.org.uk/for-the-public/skin-cancer/sunscreen-fact-sheet
debate about UV light, melanoma, and sunscreen
https://www.bmj.com/bmj/section-pdf/186530?path=/bmj/337/7663/Head_to_Head.full.pdf
background
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4041476/
case control study
http://cebp.aacrjournals.org/content/early/2010/05/21/1055-9965.EPI-09-1249.abstract
review article
https://onlinelibrary.wiley.com/doi/pdf/10.1111/bjd.16111
RCT follow up with subgroup analysis
https://www.ncbi.nlm.nih.gov/pubmed/21135266
also some evidence re reducing risk of squamous cell carcinoma
https://jamanetwork.com/journals/jamadermatology/fullarticle/479276
early studies shown sunscreen increased melanoma use
https://jamanetwork.com/journals/jamadermatology/article-abstract/478092
bias – in that some people may use sunscreen as a route to being in the sun for longer
Norway study
https://ascopubs.org/doi/full/10.1200/JCO.2016.67.5934
case control study 2011 found controls used safe sun measures more – cover, sunscreen spf 15 + = small studies, uncertainty, but
http://cebp.aacrjournals.org/content/20/12/2583https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2133.2009.09448.x
JAMA 2018
https://jamanetwork.com/journals/jamadermatology/article-abstract/2687549
childhood sunscreen use and lifetime sunscreen use were significantly associated with a decreased risk of cutaneous melanoma among young adults.
10.1001/jamadermatol.2018.1774
review and meta analysis 2018
10.1001/jamadermatol.2018.1774
French holiday resort given out sunscreens
high SPF group had fewer sunburns
black/asian skins
.http://www.bad.org.uk/for-the-public/skin-cancer/sunscreen-fact-sheet#skin-types
also
https://www.bbc.co.uk/weather/features/44013020
about the detrimental effects of these chemicals on coral and other marine organismshttps://www.thelancet.com/journals/lanplh/article/PIIS2542-5196(18)30224-9/fulltext
Beginning Jan 1, 2021, Hawaii will ban the sale or distribution of any sunscreens containing oxybenzone or octinoxate without a prescription from a licensed health-care provider
Hawaii, Palau and Key West have started to ban sunscreens with many organic ingredients because they may be damaging coral reefs. Those ingredients include oxybenzone, octinoxate and parabens.
https://www.ncbi.nlm.nih.gov/pubmed/29801220
JAMA/FDA
https://jamanetwork.com/journals/jama/article-abstract/2733085?resultClick=1
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