Added: 01/11/2006 |
Skin changes and sun light dependenceSkin changes and sun light have direct connection. At the present stage of science development the numerous performed researches show both advantageous and harmful sunlight influence on the skin. As the mechanism of skin changes and sun light dependence has been discovered it easy to understand the fact that blond and blue-eyed people tend to significant sunlight damages. That often becomes to be the reason of irreversible processes and skin cancer.
In the case skin changes caused by sunlight influence the outer layer of epidermis is under the risk of being damaged. As result of fibers damage the emergence of the malignant and premalignant skin cells is rather common.
The most harmful effects are caused by sunlight UV radiation that can be divided into three types:
1) UVA of 320-400 nm that does not influence the skin dangerously although some researchers guess it can perform as a harmful UVB one;
2) UVB of 290-320 nm is a usual reason of sunburns and skin cancer.
3) UVC of 200-290 nm has still no enough researches and conclusions.
It is clear at the moment that at present this kind of the UV radiation is filtered by the ozone layer. Its influence can be only guessed. The researches preview the damage effect in the case of the ozone layer diminishing.
The line of new research works that was opened in the 21st century discovered the number of evidences that skin changes and sun light connection is represented in DNA damage. That is the first reason of numerous possible mutations. The result was described above it is malignant skin cell emergence. The type of UVB radiation causes a local immunosuppression. In first stages of UVB low dose the effect is even invisible. But the large dose of UVB becomes the reason of the systemic immunosuppression and skin changes.
At the moment all new cosmetic surgeries and beauty salon services can resurface the skin and improve skin changes and sun light damage. But despite this fact all physicians agree in one point that insists on necessary prevention but not difficult treatments. The easiest and the most effective method is regular sunscreens? application. It is proved the sunscreen?s effect of not only sun-induced skin damaged prevention but also improvement of prematurely aged skin.
The loss of the elasticity is the direct impact of sunlight. The row of sun-induced skin damages can be added with cancerous and not cancerous (keratoacanthomas) skin growth, thickening of the skin, skin natural pigments changes (that is obvious in so called liver spots) and others.
It is possible to prevent most of these effects following simple recommendations:
- to prevent the sunlight in all possible cases;
- to use high quality sunscreens;
- to wear special clothing and protective hats.
Even the sun was one of the conditions of the human?s progress (the history of sun energy usage traces to immemorial times of the cave mankind) it is at the same time the reason of numerous pathological changes. The scientists stress that people should not make choice between their health and sunlight delight they just need to use sun energy sensibly.
Article comments:
No comments for this article yet. Post your comment now!
