UVA, UVB, UVC and Skin Cancer

According to the Skin Cancer Foundation (Skin Cancer) Skin cancer is the most common of all forms of cancer, with one million new patients each year in the United States.

There are more skin cancers than all other forms of cancer combined, including breast, prostate, lung and colon. One in five people will develop skin cancer during their lifetime.

The most common is Basal Cell Carcinoma is rarely fatal but can severely disfiguring. The second most common is squamous cell carcinoma. Both basal and squamous reproduced without the melanoma (tumor). Between 40% and 50% of those who reach the age of 65 will develop at least one time.

90% of nonmelanoma cancers are associated with exposure to ultraviolet (UV) divided into three basic categories: UVA, UVB and UVC.

UVA rays are the most common we are exposed and constitute 95% of UV rays. Are present with equal intensity in all times of day, pierce the clouds and glass.

UVA rays are tanning, penetrate the skin more deeply than UVB but are less intense. Are causing wrinkles and premature aging. Until recently there were considered very harmful but according to the scientific discoveries of the last two years it was observed that can initiate cancer. Both natural and UVA from tanning salons cause cumulative damage.

UVB is the main cause of skin cancer. Damage the surface epidermis and its intensity varies according to season and time of day. Usually become stronger between 10:00 AM and 4:00 PM. Not easily penetrate the glass, but its reflection in the water, ice or snow increase their power.

UVC rays are absorbed almost entirely by the ozone layer and do not cause epithelial damage.

Contrary to popular opinion, 80% of sun exposure acquired over a lifetime does not occur before age 18, only 23% going up to that age. Between 19 and 40 absorb 47% of sunlight, between 41 and 59 to 70% and the balance of the 71 and older. The older we become more vulnerable we are.

When melanoma is attributed to three percent of cancer cases but causes 75% of deaths. One person per hour dies from skin cancer. Chances of survival of melanoma detected early, before it penetrates the skin tumor, is 90%. If the disease progresses the chances of saving 15% decrease.

A blister caused by the sun during childhood or adolescence doubles the occurrence of melanoma later in life. The risk is increased if the person had five or more sunburns at any age.

Contrary to popular opinion, recent studies show that people receive sufficient doses of UV rays on the course of his life without sun exposure openly.

The number of women under 40 with skin cancer has doubled in the last 30 years. To 39, women are twice as likely to develop melanoma before any other cancer, except breast. Starting at 40, the incidence of melanoma in men than women and this tendency increases with age.

The artificial UV radiation is carcinogenic. First-timers of tanning beds are 12 times more UV rays than those exposed to the sun and have two and a half times more likely to develop cancer. Consequently, the risk of melanoma increases by 65%.

To avoid skin cancer is recommended not to expose to direct sunlight, use sunscreen, shirt and wide-brimmed hat on a regular basis and get a skin check once a year.

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