Why is it dangerous to stay on the beach all day?

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Why is it dangerous to stay on the beach all day?
Why is it dangerous to stay on the beach all day?
Anonim

It is important to know that it is not the sun exposure itself that is dangerous, but the excessive time spent under the sun's rays.

Then you get a sunburn, which most often causes melanoma to appear.

Sunlight, in addition to emitting the visible spectrum, also has ultraviolet radiation of three classes: uvc, uvb, uva.

The former can be neglected since the Earth's atmosphere does not let it through. The latter two play a major role in sunburns and he alth risk factors.

What is a tan and how does our skin darken?

You've probably heard of the pigment melanin. Its main task is to protect us from excess ultraviolet radiation. If there is a lot of ultraviolet radiation, then the amount of melanin also increases. A side effect of this is skin darkening. In simple terms, a tan is our body's attempt to protect itself from damage.

UVA radiation

Penetrates deep into the skin. This type of radiation plays a major role in the so-called photoaging of the skin, breaking down collagen and elastin, leading to the appearance of wrinkles and sagging skin.

UVA radiation has also been documented to negatively affect the epidermis by damaging keratinocytes, a type of cell in the basal layer of the skin, leading to skin cancer.

UVB radiation

It is much less in the total flux of solar radiation, but it is more intense. It does not penetrate deeply, it cannot pass through the glass. It is considered a recognized carcinogen.

Ultraviolet light is actually mutagenic, meaning it can damage DNA.

Melatonin is synthesized in special cells - melanocytes. In the case of prolonged exposure to solar radiation, this process goes out of control, DNA is damaged and cells begin to divide uncontrollably, resulting in melanoma.

What about vitamin D?

Someone may remember that the sun is necessary for the production of vitamin D. But it should be noted that it is a short exposure to the sun: 2-3 times a week for 10 minutes. We are talking about sun exposure without any sun protection creams etc

Solariums are considered an alternative to sun tanning. But it's a dangerous business. You can get even higher doses of UV radiation in a tanning bed than at the beach.

Hopefully it has become clear that tanning is unnecessary and dangerous.

How to protect yourself while under the sun?

If you still have to be in the sun. You should use an umbrella, a wide-brimmed hat, closed clothing and sunscreen.

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