Sunbed: where truth, and where lie?Aristocratic pallor or Hollywood suntan? In our latitudes the first option does not demand special efforts and as all readily available, has no value - “ white men “ crowds run in a sunbed.
At the same time disputes on the subject “ sunbed: brilliant invention or infernal machine? “ proceed, acquiring myths and horror stories. Now - everything is a high time to weigh pros and cons.
Pluses of the artificial sun.
Skin is affected by ultraviolet rays of two types - UVB and UVA. The most dangerous - UVC - are late an ozone layer and do not reach Earth, and in solar lamps are not generated or blocked.
The sunbed is an eternal summer. And travel to summer, when behind a window slyakotno and disgustingly, - pleasure which it is difficult to refuse. The artificial source of an ultraviolet not only gives to skin golden suntan, but also well influences nervous system, stimulating production of endorphins, “ pleasure hormones “ and serotonin, “ happiness hormone “. Shortage of light - the main reason for a seasonal depression and sleep disorders.
UVB - beams normalize a metabolism and blood formation, increase working capacity and resilience to catarrhal diseases. Under their action the vitamin D responsible for an exchange of phosphorus and calcium in an organism and preventing development of osteoporosis and caries is formed. The last researches show that “ solar " vitamin; it is capable to prevent and even to treat some forms of cancer (for example, a prostate cancer and a rectum). UVA - beams dry and disinfect skin, improving its state at seborrhea, an acne and psoriasis.
The sunbed is irreplaceable also by preparation for rest in the south: moderate suntan acts as the natural filter, absorbing up to 40% of beams and insuring against a solar burn. Besides if in the open air skin receives an uncontrollable dose of an ultraviolet, then the sunbed allows to pick up duration and frequency of sessions individually, having completely excluded risk to burn.
Minuses of the artificial sun
Skin behind ears which sunshine never touched is younger than face skin for 15 years!
The lamps applied in sunbeds radiate on average 1-3% of UVB - beams and 97-99% of UVA - beams. Beams of B force cages to develop a pigment melanin, they are responsible for emergence of reddenings and burns. Beams But are not notable, but are not less dangerous - getting into deep layers of skin, they cause destruction of collagen and elastin (structural proteins of skin), emergence of pigmentation, vascular asterisks and early wrinkles.
Thus, the radiation of solar lamps brings to naught risk to get burn, but causes photoageing: the coarsened dehydrated skin with a set of small wrinkles, so-called “ country “ aging type, - a bonus which is inevitably received by fans of a sunbed. Contrary to ordinary opinion that solar suntan cures acne rash there is the return: radiation provokes giperkeratoz (a thickening of a horn layer), pores are clogged up and inflammatory processes escalate.
In general, a burn - that signal of SOS which forces to hide from the sun. In a sunbed saving “ " mechanism; it is disconnected, and the person freely receives excessive doses of UVA. Suffers not only skin, but also hair, and a headdress does not solve a problem. Even if the core of a hair is protected, beams And damage cages of a hair matriks - the growth phase of hair is reduced and they begin to drop out.
Dermatologists and oncologists claim: regular visit of a sunbed - a stress for immune system which consequences can be shown at any time. Beams of B and beams And break activity of cages, forcing them to mutate. And though the organism, as a rule, copes with dangerous process, the part of cages - mutants can hide and begin to breed later - as a result skin diseases and emergence of new growths. Besides, there is an opinion that the ultraviolet is capable to damage the genes responsible for restoration of DNA, and it increases probability of accumulation of mutant cages.
Skin is able to cope with an ultraviolet the same as a liver with alcohol. It is all about doses and a regularity.
Instead of a conclusion
• If the desire to get warm in beams of the artificial sun outweighs all arguments against, try to obtain exhaustive information on the power of lamps, their spectral structure and term of operation in a sunbed. Lamps of low pressure (the glass tubes filled with mix of gases) are most widespread - they are universal and suit people with light skin. At the expense of smaller power (100-180vt) and a bigger dose of UVB they give suntan which is shown gradually and keeps longer. Operation term - 400-500 hours, after there is risk to be put at the radiation of an uncontrollable range.
• Lamps of a high pressure (the quartz flasks filled with mercury vapors) power 400-2000vt allow to receive instant suntan. Operation term - 800 hours. Acrylic glass in a sunbed cabin is not eternal too: in 2 years its ability to pass an ultraviolet considerably decreases.
• Need of preliminary medical consultation (the dermatologist, the mammologist and the gynecologist / urologist - the program - a minimum) is not discussed at all as except obvious contraindications (pregnancy, the Celtic phototype, pigmentary spots, numerous and large birthmarks, rash) there is still a number of restrictions.
At visit of a sunbed it is necessary to consider influence of products and drugs - some of them raise a photosensitivity and provoke photodermatitis.
Products: carrots, citrus, fig, parsnip, celery, cow-parsnip.
Drugs: hormonal contraceptives, diuretic preparations, sulfanylamides.
With the purpose to confirm ability of UVA - beams to cause dangerous mutations scientists subjected to radiation skin of buttocks of three physically healthy people (three times within a week). Unlike the samples taken before experiment in the irradiated skin the mutant cages responsible for development of a solar keratoz and a cancer of skin were found.