The Benefits Joys And Danger Of The Sunlight

The Benefits Joys And Danger Of The Sunlight



THE BENEFITS of​ THE SUN-RAYS

if​ the exposure to​ sun light is​ moderate, the benefits outnumber the dangers. First of​ all sunshine has a​ good effect upon​ the mental health and​ well-being, both due to​ the visible light and​ to​ the warming effect.
The UVA rays in​ the sunlight stimulates the skin​ to​ produce vitamin​ D. this​ vitamin​ is​ necessary for​ the normal composition, growth and​ regeneration​ of​ bone tissue. By to​ low levels of​ vitamin​ D in​ the body, the bones tend to​ loose calcium and​ get thinner and​ weaker. Newer findings suggest that many people do not get enough of​ this​ vitamin​ through the diet or​ do not absorb enough from the intestines, and​ need this​ stimulation​ to​ get good enough levels of​ vitamin​ D.

Newer findings also suggest that moderate amount of​ sunshine does not promote the occurence of​ skin​ cancer. on​ the contrary, in​ moderate amounts, exposure to​ sunshine seems to​ help prevent cancers of​ several types., especially breast cancer, colon​ cancer and​ prostate cancer.

The benefit that most people go for​ when engaging in​ sun bath, is​ the browning effect. this​ effect comes from the UVA rays stimulating the melanocytes in​ the skin​ to​ produce more of​ the brown pigment - melanin. The increased amount of​ melanin​ will protect the skin​ against the harms of​ sun-rays, and​ make you​ tolerate greater amounts of​ sun before harmful effects occur. The sun rays also stimulate the upper layer of​ the skin​ to​ grow thicker, and​ this​ makes the skin​ more robust against damage. as​ long as​ this​ thickening is​ moderate, the thickening is​ a​ good effect.


THE DANGERS of​ THE SUN-RAYS

The most visible danger of​ exaggerated sun exposure is​ the burning effect caused by the UVB rays. The effect is​ mostly due to​ immune cells in​ the skin​ releasing histamine. Histamine then causes blood vessels to​ dilate and​ also cause other symptoms of​ acute inflammation. Some cells will also be injured by the sunlight to​ such extend that they die, causing the upper layer of​ the skin​ to​ flake away.
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Exaggerated exposure to​ sun can cause brown spots - liver-spots. Furthermore it​ can cause the cancer type called basal cell carcinoma. These effects are caused both from the UVA and​ UVB rays. this​ type of​ cancer looks like brown flakes or​ brown spots, and​ may be difficult to​ distinguish from liver-spots. However, this​ kind of​ cancer is​ little malignant, and​ is​ in​ many cases just a​ cosmetic problem.

But the UVA and​ UVB rays from too much sun exposure can also cause malignant melanoma. this​ cancer consists of​ melanocyte cells been transformed into cancer cell. Malignant melanoma often evolves from birth marks. this​ cancer can remain​ small for​ a​ long time, but can also spread and​ develop very rapidly and​ swiftly evolve into a​ serious disease. in​ its initial stages, the cancer looks like an​ irregularly shaped and​ abnormally or​ irregularly coloured birthmark. People having been exposed to​ much sun and​ often been sunburned form an​ early age, are in​ special risk for​ malignant melanoma.

Traditionally skin​ cancers were thought to​ be caused by the UVB rays, but newer findings suggest that the whole ultraviolet spectre participates in​ causing cancers. Therefore using solariums that gives off only UVA rays is​ not safe from cancer risk.

Too much sun exposure for​ a​ long time will increase the speed of​ skin​ aging and​ cause permanent changes in​ the skin, due to​ the effects of​ UVB rays. The wrinkles will multiply and​ aggravate. Also the blood vessels in​ the skin​ tend to​ become permanently dilated and​ areas of​ the skin​ will often get an​ abnormal or​ irregular thickness, some places too thin, other places too thick. Due to​ the widened blood vessels, the skin​ will be permanently red.

UVC rays are normally filtered out from by the ozone layer in​ the upper atmosphaere. Nowadays this​ layer is​ wakened over certain​ areas in​ certain​ times. These rays are the most dangerous and​ easily cause cancer and​ other types of​ skin​ damage.


WHAT is​ THE BEST PROTECTIon​ AGAINST SUNLIGHT

The best way to​ get just enough sun exposure to​ get the benefits, but not so much to​ suffer the harms caused by sun rays, is​ just to​ expose your​ skin​ for​ the sun some time, and​ then cover the skin​ by clothes.
The time recomanded for​ naked exposure vary considerably. a​ person​ with brown skin​ can take much more than a​ pale person. The same is​ true about a​ person​ with thick skin. as​ you​ get used to​ the sun each year, you​ will gradually get browner and also tolerate more. if​ you​ take sunbath for​ the first time in​ the year, and​ you​ have not yet get used to​ the sun, 10-15 minutes may be enough.

However, often you​ want to​ expose your​ skin​ to​ the sun rays longer than an​ unprotected skin​ can tolerate, and​ then you​ have to​ use some topical sun protection. Sun balms are found with protection​ from 3 to​ 30. The protection​ factor is​ supposed to​ tell how many times longer you​ can be in​ the sunshine with the balm on, than without the balm. Be aware that the real protection​ factor may be less than that written on​ the bottle.

A balm with the factor 20 does not always really have that factor. if​ you​ know you​ can tolerate 0.5 hours exposure without protection, do not think that you​ really will tolerate 10 hours exposure with a​ balm of​ factor 20 on. The balm must also be renewed several times during the time you​ expose yourself for​ the sun. That is​ especially true if​ you​ take swims. The balm must neither be too old.

The face is​ the body part that it​ is​ most important to​ protect against the sun, since the face does not have any clothes on, and​ accordingly gets longest sun exposure.

Some kinds of​ nutrition​ seems to​ make the skin​ more robust against the impact from sun rays. it​ is​ for​ example wise to​ eat much fish and​ use olive oil in​ the diet. you​ should also attend to​ the news about the ozone layer, and​ always protect your​ skin​ in​ periods with weakened ozone layer.




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