There are two typs of UV rays involved in the tanning process
Ultraviolet A
Ultraviolet B,
.
UVA and UVB. UVB rays are the primary culprit behind health risks associated with both indoor and outdoor tanning.UVB is the radiation that causes sun burns.
In the 70's and 80's before the harmful affects of UVB were known, tanning beds had a much larger percentage of UVB in bulbs than today. With the increase in government regulations and the knowledge about skin damage caused primarily by UVB, most tanning beds these days have little to no UVB in the bulbs making indoor tanning comparatively safer than it was 20 years ago.
The argument against the dangers of tanning beds is that, unlike long sits in the sunshine, a visit to a salon allows the individual to be exposed for a specific period of time in a controled environment.
Employees of tanning salons should understand the dangers of tanning beds and take into account an individual's previous exposures, age, medical history and skin type. This information is then used to recommend the number of minutes for exposure in a tanning bed.
That kind of control is impossible to achieve outdoors, where variables such as the weather, the changes of seasons, reflective surfaces and altitude make the levels of UVB fluctuate. Comparatively, indoor tanning health risks are lower than the risks associated with outdoor tanning due to the controlled levels of UVB and indoor tanning provides.
In the last decade, many tanning bed owners have become more aware of the relationship between cancer and ultraviolet rays. As a result, tanning equipment that only emits UVA rays are a more common sight in salons today.
Even moderate tanning can expose you to harmful UVA rays and increase your risk of skin cancer. Each year more than 38,000 new causes of skin cancer due to UV rays are detected. At least 7,000 people die from the various types of skin cancer caused by UV rays annually. UVA can also affect your immune system by making you more susceptible to different illnesses and viruses.
Those individuals who are the most at risk of skin cancer from UVA rays that come from tanning beds are those with very fair skin. They generally have very light hair colors, they generally burn in the presence of natural sunlight, they don’t tan easily, and they have a family history of skin cancer.
Answered by
NIVEDITA
at
10:53 AM on November 25, 2008