Posts tagged ‘UV Rays’

According to a recent clinical publication and study in The Journal of The National Cancer Institute, researchers have stated that in patients with extensive actinic keratosis, Celecoxib might be useful in the prevention of nonmelanoma skin cancers.

In the U.S., more and more young adults are falling victims to this malignant  nonmelanoma skin cancers, which is the most common form of cancers. Exposure to UV rays is considered to be the primary cause behind this form of cancer and since years researchers have been studying methods to counteract skin cancers, including the use of sunscreens, which only had a relatively modest effect in preventing cancers.

The researchers, headed by Craig  A. Elmets, M.D. at the University of Alabama, Birmingham, conducted a ‘double-blind  and placebo-controlled’ experiment with 240 random people with actinic keratoses. The results showed that the number of nonmelanoma skin cancers in the persons taking Celecoxib is significantly lower than those in the placebo group.

According to the researchers, ‘ The findings of this study, which showed that the celecoxib –treated individuals developed fewer non melanoma skin cancers than placebo-treated individuals, suggest that cyclooxygenase inhibitors may provide an additional benefit to sunscreens in the prevention of nonmelanoma skin cancers’.

Moreover, further research and trials of celecoxib on colorectal odoma only proved its efficiency on later stages of tumor developments.

Further studies are being going on to determine its effects on the number of precancerous lesions.

Source: http://www.eurekalert.org/pub_releases/2010-11/jotn-cmb112410.php

A new study recently found out about the ultra violet rays that harm the human skin. It hints at the solar rays being as harmful even when the temperatures tend to dip outside. However, most people are unaware of the dangers, with skiers and mountaineers going blissfully unprotected when it comes to taking care of their skin.

The researchers discovered the UV radiation to be similar on a mountain top and a sandy beach at the height of summer.

The leader of the research team Peter A. Andersen found evidence of UV rays bouncing off the snow clad mountains even at that elevation. Consequently, the skiers get bathed in radiation said Andersen, who is associated with the School of Communication, San Diego State University, California.

The oncologists say that UV related skin cancers are the deadliest of all, killing about 8,700 Americans every year.  According to the Skin Cancer Foundation of New York, skin cancer is one of the most common cancers affecting at least 20% of the entire American population.

The study involved the researchers visiting 32 different mountain resorts with the objective of measuring the UV levels there. A total of 4,000 UV readings were amassed during the duration of the study with some of the readings being focused at the sun while the others were taken away from the sun and from the snow reflecting the sunlight. The research team also interviewed the visitors on the chairlifts and found out about degree of sun protection taken by them.

The researchers found that most of the ski resorts had multiple readings of 10 UV index, which is considered to be quite high as per the U.S. Environmental Protection Agency’s UV index.  The UV levels atop a ski resort can be as high as that on a Hawaii beach on a bright and sunny day depending on the weather conditions, concluded Andersen.


Sources: http://in.reuters.com/article/idINTRE6AG60I20101117