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Showing posts with label sun. Show all posts
Showing posts with label sun. Show all posts

Tuesday, July 22, 2014

Ask Well: Nanoparticles in Sunscreens

Today's post is shared from nytimes.com. Workers' in an outdoor environment are exposed the the sun's rays. The question arises as to whether present protective measures, ie. sunscreens are more harmful than helpful.

Titanium dioxide nanoparticles have been used increasingly in sunscreens in the last decade to protect the skin because the tiny particles directly absorb the radiation from sunlight, especially in the UVB range. But because the articles are so tiny — generally about 100 nanometers across, compared with about 3,000 to 9,000 nanometers for a speck of dust — some scientists have raised concerns about whether they might do harm by seeping through the skin and into the bloodstream.

Concerns grew when studies in mice showed that when injected under the skin, titanium dioxide caused inflammation . In addition, the International Agency on Cancer Research, part of the World Health Organization, decided in 2006 to classify titanium dioxide as a potential human carcinogen, based mostly on inhalation studies in animals, though the group called the evidence “conflicting at best.”

But research has largely dismissed such concerns about absorption, and most experts say that sunscreens containing nanoparticles can be safely used.

More recently, concerns have focused on the possibility that these nanoparticles could promote skin aging....

[Click here to see the rest of this post]

Wednesday, May 22, 2013

Don't Fry Friday - May 24th


Workers need to be aware about skin cancer and take preventative action to protect themselves from the sun's rays

Skin Cancer Remains the Most Common Cancer in US, Americans Urged to Take Action/EPA, CDC, FDA, National Council on Skin Cancer Prevention provide sun safety tips for 'Don’t Fry Day': May 24th

The U.S. Environmental Protection Agency (EPA), joined by the National Council on Skin Cancer
Prevention, the Food and Drug Administration (FDA), and the Centers for Disease Control and Prevention (CDC), is recognizing the Friday before Memorial Day as “Don’t Fry Day”, to encourage Americans to take a few simple steps to protect their health and prevent skin cancer throughout the summer.

“While we’re making progress toward restoring the Earth’s ozone layer, Americans need to take steps now for extra protection from harmful UV rays and skin cancer,” said Janet McCabe, deputy assistant administrator for EPA’s Office of Air and Radiation. “Americans can stay safe under the sun and enjoy the outdoors by taking simple steps such as using sunscreen and wearing UV-blocking sunglasses.”

“If current trends continue, one in five Americans will get skin cancer in their lifetime, and many of these skin cancers could be prevented by reducing UV exposure from the sun and indoor tanning devices,” said CDC Director Tom Frieden, M.D., M.P.H. “Of particular concern is the increase we are seeing in rates of melanoma, a potentially deadly form of skin cancer. In the United States, melanoma is one of the most common cancers among people ages 15 to 29 years.”

“Spending time in the sun increases the risk of skin cancer. Everyone can get sunburned and suffer harmful effects of exposure to UV radiation from time spent outdoors,” said FDA Commissioner Margaret A. Hamburg, M.D. “Consumers can protect themselves by choosing a sunscreen that is right for them, wearing protective clothing and limiting time in the sun.”
To make it easier for people to choose products that effectively reduce the health risks of UV overexposure, the FDA has issued new labeling rules for sunscreen products. These include:
  • Sunscreens proven to protect against both ultraviolet A (UVA) and ultraviolet B (UVB) rays can be labeled “Broad Spectrum.” Both UVB and UVA radiation contribute to the sun’s damaging effects.
  • Sunscreen products that meet the criteria for being called “Broad Spectrum” and have a Sunscreen Protection Factor (SPF) of 15 or higher may state that they reduce the risk of skin cancer and early skin aging when used as directed with other sun protection measures.
  • Any product that is not “Broad Spectrum,” or has an SPF below 15, must have a warning stating that the product has not been shown to help prevent skin cancer or early skin aging. 
  • New water resistance claims on the front label must indicate whether the sunscreen remains effective for 40 minutes or 80 minutes while swimming or sweating.

    In addition to using Broad Spectrum sunscreen, here are some tips to help enjoy the outdoors safely this Memorial Day weekend and throughout the summer:
  • Seek shade, not sun: Seek the shade when the sun’s rays are strongest; avoid sunburns, intentional tanning, and use of tanning beds; use extra caution near reflective surfaces like water and sand.
  • Wear protective clothing: Wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.
  • Check the UV Index: EPA and the National Weather Service offer the UV Index--an hourly forecast of UV radiation that allows Americans to plan outdoor activities in ways that prevent overexposure to the sun. Download EPA's free UV Index app at www.epa.gov/enviro/mobile/.
Nations across the globe have made steady progress toward restoring the Earth’s protective ozone layer through the groundbreaking environmental treaty called the Montreal Protocol. Signed by 197 countries, including the U.S. government, the Protocol is successfully working to phase out ozone-depleting substances. Scientists predict that the ozone layer will recover later this century. 
According to the CDC, the states with the highest melanoma death rates include Alabama, Arizona, Colorado, Idaho, Indiana, Iowa, Montana, Oregon, Utah, and West Virginia. Americans are encouraged to learn more about skin cancer in their states at www2.epa.gov/sunwise/skin-cancer-facts-your-state.

More on EPA sun safety tips: http://www2.epa.gov/sunwise
More on the Montreal Protocol: http://www.epa.gov/ozone/intpol/
More on FDA sunscreen labeling rules: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm258416.htm

More on CDC skin cancer prevention efforts: 
http://www.cdc.gov/cancer/skin/ and cancer statistics:http://wonder.cdc.gov/cancer.html.

More on the National Council on Skin Cancer Prevention: 
http://www.skincancerprevention.org/
Read more about "skin cancer" and workers' compensation:
May 06, 2013
Many workers suffer from compensable diseases caused by sun exposure. As the world's ozone layer continues to be deleted, More and more workers wo who have exposed to the sun on their jobs are suffering from sun ...
Jun 21, 2011
The first day of summer brings attention to working outside, sun exposure and the risk of skin cancer. Workers Compensation coverage offers a unique opportunity to provide affirmative action to prevent, detect and treat high ...
Nov 05, 2012
Workers' Compensation: Sun Exposure, Prevention and Workers ... Jun 21, 2011. Sun Exposure ... The first day of summer brings attention to working outside, sun exposure and the risk of skin cancer. Workers Compensation ...

Monday, May 6, 2013

Stay Sun Alert - Subscribe to UV Alert

Many workers suffer from compensable diseases caused by sun exposure. As the world's ozone layer continues to be deleted, More and more workers wo who have exposed to the sun on their jobs are suffering from sun induced illness. Prevent this contrition by staying alert as to the amount of Ultra-Violet Radiation (UV) and subscribe to UV Alert.


Every day the National Weather Service calculates the predicted UV Index for the next day in each area of the U.S. This UV Index forecast is published in mid-afternoon (Eastern time zone) at the EPA website. The ozone layer shields the Earth from harmful ultraviolet (UV) radiation.