cancer

Lack of Sunlight Found to Greatly Increase Risk of Lung Cancer

Wednesday, August 13, 2008 by: David Gutierrez, staff writer
Tags: lung cancer, health news, Natural News

eTrust Pro Certified

Delicious Pin It
(NaturalNews) A new study has found a correlation between higher rates of lung cancer and less exposure to sunlight.

The study was conducted by researchers from the University of California at San Diego and published in the Journal of Epidemiology and Community Health. Researchers examined data from national and international databases, including those from the World Health Organization, to compare lung cancer rates in 111 different countries. The researchers searched for correlations with national rates of smoking, as well as latitude, high cloud cover and levels of airborne aerosols.

A lower latitude indicates more sunlight and hence more exposure to the UVB radiation that causes the body to synthesize vitamin D. UVB is blocked by high cloud cover and airborne aerosols, so those factors indicate lower exposure.

The researchers found that the strongest correlation with lung cancer rates came from smoking, which was responsible for between 75 and 85 percent of all cases. But they also found a significant correlation with lower UVB exposure.

Among men, cancer rates were higher the farther a man lived from the equator. Among women, cancer rates increased with distance from the equator, high cloud cover and airborne aerosols. These correlations remained even after adjusting for the effects of smoking.

Lung cancer is one of the three most common cancers among men and women in developed countries. It kills more than one million people each year.

Researchers believe that sunlight helps protect against cancer by stimulating the production of vitamin D. Lead researcher Cedric Garland said that vitamin D is believed to cause the body to release chemicals that combine with calcium to cause the cells in organ linings to stick more closely together. This prevents these cells, which appear to be most vulnerable to cancer, from dividing uncontrollably.

While the current study looked only at lung cancer, prior studies have found that living far from the equator results in a higher risk of other internal organ cancers, such as colon cancer and breast cancer. One study found that people who live north of the Mason-Dixon Line in the United States died of colon cancer at twice the rate of those living south of it. Another study looked at vitamin D directly and found that lower blood levels of vitamin D metabolites correlated with a higher risk of colon cancer.

"The problem is that people might over-interpret this and stay in the sun for hours," Garland said. Moderation, he emphasized, is the way to go. "It would be false prudence to stay out of the sun to prevent skin cancer and not get enough vitamin D."

Kat Arney of Cancer Research U.K. agreed. "The time in the sun needed to get enough vitamin D is much less than the time it takes to tan or burn."

Garland recommends spending five to 15 minutes in the sun every day that weather permits. This presumes that this takes place on a mostly clear day, approximately 40 percent of skin area is exposed and that exposure takes place within two hours of midday. Having more skin covered, being out at a different time or a less clear day would increase the time needed. People should wear wide-brimmed hats if exposure will be longer than a few minutes, but should not use sunscreen, which blocks vitamin D synthesis.

Garland emphasized that moderate sunlight exposure does not significantly raise a person's risk of melanoma, the most dangerous form of skin cancer.

"There's plenty of potential to make vitamin D," Garland said. "Even in Helsinki, people can take advantage of the sun in summer months."

Vitamin D produced by the body during the summer can be stored until the winter.

Get breaking news alerts on GMOs, fluoride, superfoods, natural cures and more...
Join over four million monthly readers. Email privacy 100% protected. Unsubscribe at any time.


Have comments on this article? Post them here:

comments powered by Disqus

Take Action: Support NaturalNews.com

Email this article to a friend

Permalink to this article:

Reprinting this article: Non-commercial use OK, cite NaturalNews.com with clickable link.

Embed article link: (copy HTML code below):
Most Popular
Today | Week | Month | Year

See all Top Headlines...



GET SHOW DETAILS
+ a FREE GIFT

Now Available at ShopNaturalNews.com

O3 Essentials OraJuvenate™
A powerful, cleansing dental cream for maximum oral/dental health.
New Cancer Solutions
Over 3 hours of content covering today’s best cancer tests, how to kill cancer cells and the best diets and exercise routines.
Freeze-Dried 100% Organic Whole Corn
Our freeze-drying method preserves taste, texture and nutrients better than any other food preservation method ever invented.
Fenix TK35 Flashlight
Tough, waterproof, extremely bright and it’s touted to throw an 800+ lumen beam more than 1,000 feet into the night.
Inca Treasure Smoothie Pack
This pack of our four most popular superfoods from South America is the perfect combo pack for smoothie lovers.
Pink Himalayan Salt
This salt delivers significant levels of magnesium, zinc and selenium, with trace levels of dozens of other elements.
Pinhole Glasses - Aviator Style
Pinhole glasses are becoming famous for helping people improve their vision without the risks of laser surgery.
Oxy-Rich Facial Serum
O3 Essentials Jojoba Oxy-Rich Facial Serum is cellular nourishment for your skin. Helps smooth fine lines while enhancing tissue elasticity.
Freeze-Dried 100% Blackberry Halves
Our freeze-dried blackberry halves are grown in Serbia under strict organic standards.

Also on NaturalNews:

Health Ranger Videos
Activist music
CounterThink Cartoons
Food documentaries
FREE Special Reports
Podcasts
Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...

Most Popular Stories

Flu shot kills 19-year-old, but vaccine industry still has total immunity against lawsuits
Here's a nutty fact: Eating more tree nuts lowers the risk of all-cause death by up to 20 percent
Six important facts you're not being told about lost Malaysia Airlines Flight 370
Malaysia Airlines Flight 370 now clearly a government cover-up: All evidence contradicts official story
10 other companies that use the same Subway yoga mat chemical in their buns
BLM fracking racket exposed! Armed siege and cattle theft from Bundy ranch really about fracking leases
High-dose vitamin C injections shown to annihilate cancer
U.S. treating meat with ammonia, bleach and antibiotics to kill the '24-hour sickness'
USDA to allow U.S. to be overrun with contaminated chicken from China
Vaccine fraud exposed: Measles and mumps making a huge comeback because vaccines are designed to fail, say Merck virologists
Battle for humanity nearly lost: global food supply deliberately engineered to end life, not nourish it
Diet soda, aspartame linked to premature deaths in women

25 Amazing Facts About Food

This FREE downloadable report unveils a collection of astonishing and little-known facts about the food we eat very day. Click here to read it now...

 

Resveratrol and its Effects on Human Health and Longevity - Myth or Miracle.

Unlock the secrets of cellular health with the "miracle" nutrient Resveratrol Click here to read it now...

 

Nutrition Can Save America

FREE online report shows how we can save America through a nutrition health care revolution. "Eating healthy is patriotic!" Click here to read it now...

The Healing Power of Sunlight and Vitamin D

In this exclusive interview, Dr. Michael Holick reveals fascinating facts on how vitamin D is created and used in the human body to ward off chronic diseases like cancer, osteoporosis, mental disorders and more. Click here to read it now...

Vaccines: Get the Full Story

The International Medical Council on Vaccination has released, exclusively through NaturalNews.com, a groundbreaking document containing the signatures of physicians, brain surgeons and professors, all of which have signed on to a document stating that vaccines pose a significant risk of harm to the health of children. Click here to read it now...

Health Ranger Storable Organics

GMO-free, chemical-free foods and superfoods for long-term storage and preparedness. See selection at www.StorableOrganics.com



Recommended Resources On:

Natural News trends
Health Ranger news
Natural News GMOs
Mike Adams tracker
Natural News photos
Natural News Global
Natural News in focus
Natural News connect
Natural News shocking stories
Natural News radar
GMOs
Quackwatch
Vaccines
Health freedom
Dr. Paul Offit

This site is part of the Natural News Network © 2014 All Rights Reserved. Privacy | Terms All content posted on this site is commentary or opinion and is protected under Free Speech. Truth Publishing International, LTD. is not responsible for content written by contributing authors. The information on this site is provided for educational and entertainment purposes only. It is not intended as a substitute for professional advice of any kind. Truth Publishing assumes no responsibility for the use or misuse of this material. Your use of this website indicates your agreement to these terms and those published here. All trademarks, registered trademarks and servicemarks mentioned on this site are the property of their respective owners.

eTrust Pro Certified Android app on Google Play

Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of NaturalNews.com, the internet's No. 1 natural health news site. (Source: Alexa.com)

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.